I just got back from San Carlos it was my first Saltwater dive in my 7-6-5 Tilos Hyperstretch. Using a AL80 I dive with 24 lbs in freshwater. I'm 200 lbs and wear an XL. My first attempt to submerge was with my BCD weight and trim pockets maxed out with 30 lbs and that wasn't quite enough. So I wouldn't need to keep my buddy waiting to long I grabbed another pair of 2 lbs and slipped them into my accessory pockets. At 34 lbs I was a bit heavier than needed but it was easily manageable. Next time I may start with 32 lbs and see if I can submerge again at the end of my dive with 500 psi left in the tank.