Simon - not too sure about either of those things. Re the second one: the apparent correlation between packing and deep BOs may simply be because the divers who are packing lots are the same ones who are pushing hard. The two go together quite well. I expect if they'd done the same depths without packing the results would have been just as bad or worse. There is a buoyancy-change penalty associated with packing, but not enough to outweigh the benefits for most divers (possibly not all) if we're talking pure performance potential.
Also, as a packing diver I've found it fairly easy to transition to shallow/medium FRC dives, though I haven't tried deep ones. I still suspect packing helps increase the overall flexibility of your chest, inwards as well as outwards. I haven't seen evidence either way, just my observations which are limited
Quote:
Originally Posted by DivingDane
Eric... i know this is getting off topic but you mention a feeling of doom at the bottom of a dive, i'm assuming this only occurs in deep dives, or does it occur in all dives where people are approaching their limitDD
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Narcosis. Not pleasant!
