Learning Skills from some instructors might be a waste of time

Skills are the foundation of safe and enjoyable diving and the building blocks of all diving certifications. The comment here is not that learning skills is a waste of time, but, learn them from the wrong instructor, and you will have to re-do them completely for them to be of any use.

 

Until you get into deep trimix or cave diving training, there is little emphasis in diving qualifications on anything other than meeting performance based skill standards. That is you can do a shutdown in 40 seconds whilst keeping perfect buoyancy. You can deploy a long hose without it looking like an advanced knitting technique. Very pretty for the video feedback and easily and calmly done in response to an instructors signal. Frankly however not much use in the real world. Neither by the way is the pseudo wanna be military types with camouflage trousers and a ‘my agency is tougher than yours’ attitude. The ripping masks and fins off at random and messing with kit is just dangerous, and not a learning experience that benefits any student. I did my Mod1 a few years ago with an ex military instructor and he was clearly against that type of BS and states in his course materials that he has no time for it. In cave or trimix, lessons have been hard learnt by the instructor and are passed on to the student who will also have gained considerable experience (if wise) before embarking on this route.

 

It’s little wonder then that we hear so often, its not the agency or the course, its the instructor. Why? Well if all you do is get someone over a fairly subjectively set line on a skill performance, you can sign them off as passing, frankly that sucks. What does the student get? Well, they might have learnt a new skill that they can trot out in response to the appropriate signal from an instructor, but that’s it. What is the students capability to recognise the how, the when, the where but most importantly the why of the skill. Realistic prompts and cues the student will recognise that should kick them into executing the skills should also be included.

 

Why then are some instructors more valued, have great reputations and their courses felt to ‘graduate’ better divers. Of course, these great instructors are not happy getting students ‘over the line’ they will demonstrate demand and insist that the student executes much higher standards of skill performance. They will be great teachers. That is they will have an empathy and connection to the student and be able to make things understandable in a way that suits the students preferred learning style. I’d have been up for expanding on this point, but to be fair, Mark Powell’s presentation at Dive 2015 on why training doesn’t work, knocked that one out of the park. Worth reiterating his point on how, without practice skill performance drops dramatically in only a few weeks. This is common in motor learning theory. There are a couple of influencing factors. First how well was the skill mastered at the time? If only just over the line the chances of being able to repeat that skill even one week later is slim. The second is how many different ways and scenarios was the skill practiced. Even if you can execute the movements well, learning skills though is wasted in the first place if you don’t know the context and the triggers for using them. Every CCR diver knows how to bail out, its the when, the why and the ‘on to what’ that’s really important. Not leaving it too long, but also not abandoning a piece of life support equipment in an ill thought out rush.

 

So what do great instructors do? They get you to learn not just the mechanics of the skill, but also the context and scenarios in which that skill is to be applied. This is far more prevalent in technical training than recreational, probably because it’s harder to become a tech instructor with most agencies, tech instructors have a solid basis from teaching recreational and they have probably been in the contexts or situations for which they are teaching. They carefully control the stress levels to which they expose the student, building the students autonomous responses or reasoned responses to the real life everyday scenarios they might face in their diving. 

 

This is the same when teaching recreational. A recent facebook post showed students still kneeling for skills. Comments were made ‘this might have been their first dive, bit early to expect neutral buoyancy’. I disagree, of course I’m not going to expect perfect buoyancy, but I am going to demonstrate to the student what good looks like and what they will aspire towards. I’ll then work harder on helping them master this early ahead of out of airs etc because once the foundation is in place (buoyancy / trim / propulsion) all other skills can be learnt and mastered “in context”. No-one is going to come to you out of air while both you and they are kneeling in a pool.

 

Learning is a psychological process and as such, because we are all individuals, we all learn differently. Teaching styles and learning environments must account for these individual differences. In diving we embed motor skills into the learning process but we also would be well advised to develop stress management, thinking skills / decision making, and appropriate autonomous responses. There are some very gifted instructors out there who manage this naturally. For most, they have to think and plan their way to help students get the best out of themselves.

 

In sports coaching research, there are a couple of interesting concepts that are gaining great buy-in from some of the leading practitioners. These are Authentic Coaching and Holistic Coaching. Firstly authentic coaching, theres a good article by Barnson, (2014), but essentially the coach is true to themselves and to the coachee. Obvious you say, but not in reality I fear. There are many coaches and instructors who behave how they think the student or the agency or worse, behave in ways they think makes them look cool or saleable. Our previous gung ho militaristic type is one of these. Similarly I fear anyone whom actually likes wearing a shirt with Instructor and loads of badges. Sometimes you have to for marketing and/or to represent a centre. Personally I’d rather be recognised for what I do. If you are not being true to yourself and ‘playing a part’ that falseness will come through in your teaching effectiveness.

 

Holistic coaching, a term brought to the fore by Tanya Cassidy is looking far more at the person as a whole as opposed to just what skills they need to learn. For example, if a person needs to learn a bailout drill, it doesn’t take long to teach the mechanics of the drill. Holistically though we should address that persons abilities around emotional control, decision making, concentration, physical attributes etc. In holistic coaching its thought by taking and developing the whole person, using the coaching situation or context as a tool, you enrich the person inside and outside that coaching interaction. I tend to agree. Im certain that the learning experience is richer, that skills are more deeply embedded, and that context and cues for when and where to apply those skills have been thoroughly covered.

 

Coaching effectiveness is an often abused term and I’d apply the same to instructor effectiveness. True effectiveness (look up Coté and Gilbert) relies on the coach or instructor having expertise in three critical knowledge types.

 

Professional knowledge – detailed and applied knowledge about the art, science, skills and tactics of what they are coaching

Interpersonal knowledge – an ability to build and foment relationships

Intrapersonal knowledge – an ability to understand oneself and capacity for self reflection

 

I don’t think it would be hard for most of us to identify those instructors we believe to be effective and see immediately the correlation between those instructors and the required knowledge above.

 

It also needs to be measured. To be effective you have to know where your start and finish points are and whether the process of coaching or instructing is what is making the difference in getting people there. For sure there are the very talented who need minimal coaching and conversely those for whom no amount of coaching will ever make a difference. Quite a complicated interaction then, well yes, but so it should be.

 

How do we get instructors over the line. Well, in developing performance sports coaches we have identified the vital importance of good mentors. They help the instructor reflect, develop and really build the inter and intra personal knowledge. Traditional coaching courses and instructor courses are pretty good at developing the professional knowledge, although again the mentors are invaluable. In my own instructor development I’ve been very privileged to have an outstanding mentor who I still see a couple of times a year, to great value.

 

Ask yourself before you book on training if its going to give you what you want. Ask the instructor you’re considering how much of your training is scenario based, how much work do they put in setting up decision making opportunities, how do they mimic realities for when you will have to implement the skills. Ask about, good instructors will be delighted to engage with you on this.

 

Matt

Matt Jevon, M.Sc. F. IoD is a Full Expedition level Trimix and Cave instructor on OC and CCR with TDI and ANDI. He is the JJ-CCR and Divesoft Liberty Sidemount instructor and dealer for Ireland. Matt’s personal diving has included cave exploration in the Philippines, wreck projects in Croatia and Ireland as well as being one of the inaugural dirty dozen in Truk! Matt has held accreditations as an interdisciplinary sports scientist, sports psychologist with BASES and was a British Olympic Registered Strength and Conditioning Coach and invitee on the Olympic Psychology Advisory Group. Matt works in high performance business as a board advisor and non-exec, high performance sport and is a partner in South West Technical Diving in Ireland. www.swt.ie and writes the Facebook page Psychological Skills for Diving

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To BOV(er) or not to BOV(er)

BOV or no BOV

 

This is usually a polarised argument. People are either all for or all against.  So, let us examine the arguments from both sides. I’m going to put in some assumptions though. To me they are not assumptions, mainly because I have tested these in dry chamber dives or if safe to do so in the water.

 

Assumption 1 – You only bailout from an unbreathable loop. In the case of hyperoxia (too much O2) Hypoxia (too little O2) this bailout is temporary till you shutdown, on board/offboard gas, manually correct, exclude cells etc. In the case of hypercapnia (CO2) bailout is permanent. In the case of flood (unrecoverable) bailout is permanent.

 

Assumption 2 – You are well enough trained and mentally tough enough to only need to bailout fast from a CO2 situation with the resultant massive ventilation increase, all others give you anything from a few seconds to a couple of minutes to bailout without any more than a minor stress increase in ventilations.

 

Assumption 3 – You need at least 30 minutes of OC gas at 45 lmin to 70 lmin as an absolute minimum to bail on to. This is because a CO2 hit takes at least 30 mins to recover from to the point where ventilations return to relatively normal.

 

Argument 1.  

 

A BOV is the only thing that will save your life if you have a CO2 hit. This is because in a CO2 hit your ventilations rise to the level where switching to an open circuit regulator would be impossible. 

 

For…                      This has some truth, depending on the function of your BOV as it switches CCR to OC.  Some divers report it’s the only way they could have switched when getting into or having a CO2 hit. A hit happens fast and easily if your scrubber, bypass seals or mushroom valves have failed so a quick easy switch is good, of course. 

 

Against…             Every BOV has a point as you turn the valve from closed to open circuit where there is no gas flow (OC or CCR) at all. If you are deep in a CO2 hit as you pass this point and hyperventilating, you could easily spit the mouthpiece.

 

Against…             Pack your scrubber correctly, check your seals, pre-breathe, check mushroom valves, do not exceed scrubber durations and the chances of a CO2 hit are minimal. 

 

Against...             Whatever you use, BOV, necklaced OC reg, stage bottle, if you get into a CO2 hit switching to OC in any method is a problem, bailout early; stay off loop, don’t go back and ‘test it’ if there is any chance it was CO2.  

 

Against…             There is a technique I teach on my CCR rescue course where an OC reg can create a breathable bubble under the DSV by being free flowed allowing a switch in a hyperventilating situation to an OC reg. It uses a lot of gas, so allow for it in planning, (so does having a CO2 hit) but this negates the ‘you’ll never switch to OC mid hit argument’ in most circumstances

 

Argument 2.  

 

A BOV is always connected to a breathable gas so no issues over gas switch protocols in an emergency.  

 

For…                      True, if you never dive hypoxic mixes. 

 

Against…             A well trained CCR diver will always rotate the ‘ideal’ bailout stage bottle to be the one they can grab a reg off without having to check. Usually top left. A MODS/NOTOXIC routine is not appropriate for bailouts. Moving unsuitable bottles behind them on a leash or to the right side if preferred makes this easy.  A CCR diver can connect and disconnect their BOV to suitable gas sources this way, but it is an extra step over the bottle rotation. 

 

 

 

 

Argument 3. 

 

A BOV is better to use all the time against the rare chance of a CO2 hit. 

 

Against…             A BOV can never because of design compromises breathe as well as a DSV only (dive surface valve) so you then tolerate compromised work of breathing on every dive against the 1 in 10,000 chance of a CO2 hit.  Assuming you don’t take shortcuts with scrubbers, fresh lime, equipment prep and maintenance those are fair odds. 

 

Against…            Time and switches. What is the BOV connected to? If it’s a 3-litre diluent then you just gave yourself 60 seconds to sort the issue at any technical depth. Your ‘recovery’ from a CO2 hit will take 30-45 minutes or more at a sac rate well over 45 l min and could be 80-100 plus.  Even if connected to an 11-litre off board, you still need to make switches in the ascent and you may be making, or trying to make the first switch much sooner than you have recovered enough to go full open circuit. Even if you have enough gas in the deep bailout, you will still be on gassing and messing up your deco schedule and gas calculations. 

 

Against…             BOV’s are heavy in the mouth leading to jaw fatigue on longer dives

Where is a BOV useful?

 

  1. Shallow water diving where you carry the bailout entirely on the CCR. A BOV connected to onboard twin 7’s gives you 14 litres of useable gas. As you are shallow and should have no or very limited deco this will get you to the surface. This rig is simple, and self-contained for rib and boat diving albeit heavy. You still need a necklaced OC reg for redundancy or possible donation.

 

  1. In a cave. I may not in a cave always have an ability to reach or rotate stages. Lots of caves have squeezes or restrictions that can clog second stages with sediment or gravel. I like a BOV in a cave. As I mostly scooter or swim a lot slower in a cave, the compromised work of breathing is ‘just’ acceptable.   My rule though is the BOV must be connected to at least 30 minutes of gas. 

 

 

Conclusion.

Don’t believe you can be having a full on CO2 hit while managing an ascent in open water – no shot line, deploying an smb, finding teammates with team gas and making stops. If you think this is amount of task loading is possible to manage in a situation where CO2 and N2 narcosis, stress, O2 depletion and physical challenge all come at once and where the consequence is severe to fatal, please sell your gear and take up knitting.

 

Use a DSV for open water, deep and hypoxic diving. Use stage rotations to keep the best bailout on top and the reg necklaced or to hand. Bailout at the very first and smallest hint that anything CO2 related is occurring. 

 

A BOV is only essential in one case where you cannot reach an OC reg quickly, then bear in mind the ‘no breath’ part of turning the valve. Otherwise dependent on circumstances, it is convenient rather than advantageous and carries several downsides, WOB and weight in the mouth on every dive being the most significant. I’ve used a range of OEM and aftermarket BOV’s and so far the only one I really like is the Divesoft. Neutral in water and probably best in class wob.

 

 

 

Matt

Matt Jevon, M.Sc. F. IoD is a Full Expedition level Trimix and Cave instructor on OC and CCR with TDI and ANDI. He is the JJ-CCR and Divesoft Liberty Sidemount instructor and dealer for Ireland. Matt’s personal diving has included cave exploration in the Philippines, wreck projects in Croatia and Ireland as well as being one of the inaugural dirty dozen in Truk! Matt has held accreditations as an interdisciplinary sports scientist, sports psychologist with BASES and was a British Olympic Registered Strength and Conditioning Coach and invitee on the Olympic Psychology Advisory Group. Matt works in high performance business as a board advisor and non-exec, high performance sport and is a partner in South West Technical Diving in Ireland. www.swt.ie and writes the Facebook page Psychological Skills for Diving

#tdidivecentre #andifacility #Apekstechnicalcentre #caveinstructor #jjccrfactoryservicecentre #JJCCR  #ANDI #nolimitsexploration #cavediving #Apeks #divesoft #sidemountccr #southwestech #nautilus #othree90ninety  #divemorepostless #xdeep #TDI #technicaldiving #scaleolights #rebreathers #seacraft #kubidrygloves #sidemountessentialsinstructor #sidemountccr #libertyccr #jjccr_official #wedontsellwhatwedontdive #nobubbles #diving #deepdive #techdiving #technicaldiving #ccrdiver #underwater #trimix #wreckdiver #cavediver

Twinset Valve Drill

Twinset Valve Drill

 

The valve drill should be and in fact is easier to carry out in flat trim, with your head up and not moving!

Before jumping in make sure you haven’t got folds of drysuit or undersuit restricting movement, this should be obvious when doing a flow check!

Keep your elbow high and facing forward, arm brushing ear.

Do not drop your head in the movement

 

Order of Events

 

  1. Tell your teammates you are doing a drill – otherwise they may come and ‘help’ you
  2. Signal with light – emergency
  3. Quick purge left reg so you know working
  4. Close Right Post and Breathe reg down
  5. Switch to left post
  6. Clip off long hose Reg
  7. Close manifold
  8. Re-open right post and purge long hose reg so you know its working
  9. Switch light to right hand
  10. Close left post and breathe down – unclip right reg before you fully close
  11. Switch to long hose
  12. Open left post
  13. Return Light to left hand
  14. Open manifold
  15. Flow check (you and/or teammate/instructor)
  16. Check Gas pressure / gauge movement

 The mechanics of the drill are well demonstrated here by Style Diving https://www.youtube.com/watch?v=bHsKF1VYdL4 although the order is a little different.

 

 

 

THINK

 

Is the gauge dropping when left side isolated? If so leak is left.

Breathe the bad side dead.

If you isolate a leaking cylinder with the manifold, breathe that one first, get as much from it as you can and save the non leaky cylinder for last.

If you suddenly seem to be using no gas you have left the manifold shut!

 

KISS

 

Matt

Matt Jevon, M.Sc. F.IoD is a Full Expedition level Trimix and Cave instructor on OC and CCR with TDI and ANDI. He is the JJ-CCR and Divesoft Liberty Sidemount instructor and dealer for Ireland. Matt’s personal diving has included cave exploration in the Philippines, wreck projects in Croatia and Ireland as well as being one of the inaugural dirty dozen in Truk! Matt has held accreditations as an interdisciplinary sports scientist, sports psychologist with BASES and was a British Olympic Registered Strength and Conditioning Coach and invitee on the Olympic Psychology Advisory Group. Matt works in high performance business as a board advisor and non-exec, high performance sport and is a partner in South West Technical Diving in Ireland. www.swt.ie and writes the Facebook page Psychological Skills for Diving

 

#tdidivecentre #andifacility #Apekstechnicalcentre #caveinstructor #jjccrfactoryservicecentre #JJCCR  #ANDI #nolimitsexploration #cavediving #Apeks #divesoft #sidemountccr #southwestech #nautilus #othree90ninety  #divemorepostless #xdeep #TDI #technicaldiving #scaleolights #rebreathers #seacraft #kubidrygloves #sidemountessentialsinstructor #sidemountccr #libertyccr #jjccr_official #wedontsellwhatwedontdive #nobubbles #diving #deepdive #techdiving #technicaldiving #ccrdiver #underwater #trimix #wreckdiver #cavediver

Insurance

Now with Covid 19 cover

 

Insurance is a massive issue for us all as divers and something we need for peace of mind for ourselves and is usually required by dive centres or local country legislation. We have through TDI recently moved to DiveAssure, an excellent level of cover and really good customer service. Check out the info in the attached pdf or click here https://diveassure.com/eu-en/coverage-and-rates/?pid=16394 to get a personal quote and sign up. Hands up we do get a small intro fee if you use the link above so thank you. Anything that offsets our costs helps us continue to deliver value to our customers.

Dive&Travel membership plans currently include different kinds of Covid19-related coverage such as

  • Medical expenses for treatment of Covid19 during a covered travel, as described in the schedule of benefits.
  • Cancellation and curtailment of travel due to Covid19, as described in the description of coverage.
  • Quarantine expenses during a covered travel, as described in the schedule of benefits.

 It should be emphasized that the membership plan must be completed within 14 days after the first payment of a deposit for the trip and at least 14 days before an infection occurs for the Covid19-related coverage to take effect.

#tdidivecentre #andifacility #Apekstechnicalcentre #caveinstructor #jjccrfactoryservicecentre #JJCCR  #ANDI #nolimitsexploration #cavediving #Apeks #divesoft #sidemountccr #southwestech #nautilus #othree90ninety  #divemorepostless #xdeep #TDI #technicaldiving #scaleolights #rebreathers #seacraft #kubidrygloves #sidemountessentialsinstructor #sidemountccr #libertyccr #jjccr_official #wedontsellwhatwedontdive #nobubbles #diving #deepdive #techdiving #technicaldiving #ccrdiver #underwater #trimix #wreckdiver #cavediver