I went out on a dive boat this weekend and saw at least 3 divers doing this. Is this common , i really didnt want to ask out on the boat ( arguements etc etc ). How many people actually need ankle weights for wet suit diving?? I can understand for drysuits to some extent. I probably should have asked the Padi instructer on the boat who was doing this, but i didnt think he would know. Anyone have thoughts and comments for a better understanding of this. The tanks everyone was diving were Alum 80's so that wasnt a facter.