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The trouble with the advice to "try before you buy" is that when you are a newb, you haven't been taught how to use your fins properly. So you are going to like the fins that seem to feel the best when you are doing an inefficient kick, almost certainly some sort of flutter or scissor kick...

Could a high END be a contributing factor on incidents where diver error is involved? For example, "insufficient air." Could any of those deaths have been prevented by a diver checking their SPGs more frequently and aborting their dive at an earlier point?

This isn't what you are saying, but it really reminds me of the SpareAir debates. What I read was people saying, "I'm not going to spend the $$$ on doubles and a pony is too much bother, and I am not going to restrict myself to diving with a trusted buddy, and I refuse to stay close to another...

A little free diving teaches this immediately and vividly. As part of my Recreational Trimix certification (all bow before my l33t sk1llz!) I had to do an out of air swim at 120'. The key was to relax and swim slowly and calmly, like a free diver. I would have failed if I had become anxious and...

I agree that the comparison not particularly accurate, although it is still useful for explaining narcosis. Alcohol tolerance is governed by alcohol dehydrogenase, an enzyme. So in effect, the people who have adapted haven't produced an ability to function with higher blood alcohol levels...

Thanks everyone. To summarize, when diving doubles, conservative gas management plans like diving thirds do account for the unlikely possibility of a buddy losing all gas, but they also allow for managing other predicaments that would require additional gas to get home safely like becoming lost...

So I get that diving thirds or sixths or rock bottom or any similar gas management strategy is designed to make sure you have enough gas for you and a buddy to resolve an emergency and then get home together. The basic assumption is that you are planning for your buddy to lose all of his gas...

Oh no you didn't! But yes you did. In any event, I took you literally and my first reaction was that I couldn't see a primary light.

Nevertheless, for someone learning from more experienced divers, there is a world of difference between "Deep air does impair my facilities but I'm not putting anyone else's life at risk" and "I'm fine diving deep air."

Nvm...

Silly ass, comparing Jaeger Bombs to Deep Air diving. Jaeger bombs are standard NDL rec diving, my instructor made me buy rounds of Jaeger Bombs as part of the PADI Deep Dive to get the feeling of Nitrogen Narcosis. Said it was safe and effective dry land training for diving air. Now if you...

So I know this is a bit of a cliché point to bring up, but would you say that you were diving beyond your training? Would you say that this is not an area where training is particularly relevant? or perhaps would you say that you trained yourself rather than seeking a didactic approach? Not...

Marc, when you're ready to practice your deep rescue skills, c'mon up and we'll hit Five Fathoms together. Man, I need to get out there, I've heard nothing but wonderful things about "The Emerald Sea." Okay, we now return to our regularly scheduled debate...

One thing I haven't seen mentioned here is the question of effort and CO2 build-up. My cyber-diving manual says that some divers choose to dive trimix at relatively shallow depths (100' - 150') when they anticipate a high cardiovascular effort, for example when swimming against a current. I was...

The hose running behind Marc's right shoulder is his 7' primary. It runs down to his waist, back up his left chest, around his neck, and to his regulator. The hose running behind Marc's left shoulder goes to his SPG, which is clipped to his left waist D-ring.

That's why guys like me like to flash our "Certified Cyber-Diver" card... Then you slip overboard while the DM is doubled over laughing and do your own thing...

I only have 72 dives as of now, so I certainly may have missed all the bad apples out there. But so far, what I've seen are two kinds of boat dives. One is where you are paying to be ferried to and from the dive site and you are responsible for yourself and for following the captain's...

You may find this article on Rock Bottom and Gas Management for Recreational Divers interesting. "Rock Bottom" is a strategy for deciding when to start ascending from a dive by estimating how much gas you would need if your buddy had an emergency and you need to solve the problem then make a...

Whose reality? There is definitely a disconnect between what my LDS teaches and what I learned out actually diving, however what my LDS teaches is what the employees actually believe and dive. Their instructors wear jacket BCDs on dive trips. One fellow took eleven PADI specialty courses so...

OT: I suppose that if you want a good belly laugh out of these guys, you suggest that We don't inherit historical treasures from our parents, we leave them to our children...