Quote Originally Posted by Finless View Post
No ....... not really .......... you only need to let it get a little bit too far in front of you and away you go. Particularly in the shallower depths where the pressure change is greatest and the expansion of the gas in your suit is greatest!
I know how that is. On my first open water training dive in a drysuit (already with an instructor rating, BTW), I had an ascent when I came up to make a safety stop and couldn't dump the air fast enough. The dump valve was purging too slow (the instructor had told me to dial it closed a couple of clicks on the bottom so that it wouldn't be constantly bleeding out air), and jamming on it didn't help enough, as far as I could tell. Colleagues of mine here on Phuket who are drysuit trained from their home countries told me about the arm-raising thing. I'm not in a hurry to test it out, though! OTOH, I'm pretty sure I'll buy my own drysuit so that I don't dive "wet" in one again.