Well, whether you go up 10 feet slowly or 10 feet fast, the expansion of the gas in the dry suit boots is the same, and it's got to get out of there somehow or your feet will be pinned to the ceiling 
I suspect the answer is to run the suit fairly empty, and make sure the gas doesn't get there in the first place.
But watching Danny float around the cave, up and down, and do so VERY little adjusting gave me a goal to work toward, even if I don't know which magic tricks he was using to be able to do that!

I suspect the answer is to run the suit fairly empty, and make sure the gas doesn't get there in the first place.
But watching Danny float around the cave, up and down, and do so VERY little adjusting gave me a goal to work toward, even if I don't know which magic tricks he was using to be able to do that!