Bob DBF
Contributor
Divers are always tempted to dive beyond recreational limits. Personally, I believe that giving the diver the skills, practice and information needed to make good decisions is a better solution than the "dive in conditions that you were trained in" which is usually 20' of clear water. OW has turned, for the most part, into a joke and that is what I think is the basis of disregarding the good information given there.Adventure dives by definition are INTRODUCTORY experiences, and your requirement for using pony bottles isn't even part of the required knowledge base. In fact, I think you do a disservice by even teaching what is a skill beyond the scope of this dive to these divers since the focus is to teach a diver how to experience diving withing the deep parameters of their recreational diving world (18-40meters)... why would you want to introduce higher level task and skills that 'enable' a diver to purposefully exceed recreational limits? (surely you can't be so naive to believe that by teaching such skills, that some divers would not then be tempted to do dives beyond recreational limits just because 'they know how').
...or in my case knot tying game is to demonstrate to the student the effects of deep water on their mental accuity... loss of dexterity
This was the foolish part of the deep dive. Tying a knot on land and comparing times to tying it in a 100' of water is funny because if you had them tie it in 20' of water it would probably take almost the same time, the rope reacts differently underwater. I had a minimal time difference because I tie knots underwater on a regular basis, others took forever because of inexperience more than narcosis.
Bob
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That's my point, people, by and large, are not taught that diving can be deadly, they are taught how safe it is, and they are not equipped with the skills, taught and trained to the level required to be useful in an emergency.