Its not due to added boyancy, as a professional diver i can tell you that wont help you here since many of these women are still dominating the non-weighted categories.. meaning boyancy would work **against** them since they need to swim down before they swim back up.
If it worked how you suggest then all the winners would be super fat dudes who just tie a bunch of weights on themselves, hold their breath, sink to the bottom of the ocean, then untie it and pop up to the top like cork, lol.
I've directly responded to every one of your comments. if you want to storm off just cause someone doesnt agree with you, go for it.. buh bye.