Something that hasn't been mentioned is how to deal with runaway inflation. The last thing you want is to be at 100 fsw after a 20 minute dive and have your inflator freeflow on you.
Take a class so you learn how to deal with such things, and practice the skills until they are automatic.
Also, speaking of legs up, I heard a story recently about a new drysuit diver he knew who was on a night dive and inflated his legs. Before he knew it, he was finless, floating upside down on the surface (and or course lost his buddy). Without find he couldn't right himself, and after a few minutes was about ready to take his knife and cut himself out of his new drysuit to get out. Lucky for him, he drifted by a fishing boat who saw the two legs sticking out of the water and somebody jumped in to help him right himself.
The guy telling me the story really enjoyed telling it. I got the feeling he didn't think much of the diver in question.
Take a class so you learn how to deal with such things, and practice the skills until they are automatic.
Also, speaking of legs up, I heard a story recently about a new drysuit diver he knew who was on a night dive and inflated his legs. Before he knew it, he was finless, floating upside down on the surface (and or course lost his buddy). Without find he couldn't right himself, and after a few minutes was about ready to take his knife and cut himself out of his new drysuit to get out. Lucky for him, he drifted by a fishing boat who saw the two legs sticking out of the water and somebody jumped in to help him right himself.
The guy telling me the story really enjoyed telling it. I got the feeling he didn't think much of the diver in question.