Just remember that if you get your buoyancy dead on in the pool, you must add another 4lbs if you do the test with a FULL 80 cf tank and then you need to add another 3% of your total weight- gear and body- for the additional bouyancy of salt water. Another method and likely a better one, is to take the wetsuit to the pool and submerge it making sure you get all the air out of it, then while underwater (to keep the air out) you can roll/fold it into a small bundle and rubberband or tie it up. Once you have done that, you can start hanging weights on it until it sinks. That is the exact weight it will add in fresh water, add 3% to than number and you have it's saltwater buoyancy which you can add to your Coz skin weight. As an off hand guess, I would bet it will not add more than 4 or 5 lbs. Almost all new divers (and way to many "experienced" divers) are grossly overweighted, my bet is even at 10 lbs you are still overweighted.
