I dive with a cannister on my right side, about 3 pounds for that, steel tank and stainless steel backplate. I have a weight pocket on my left side of my waist belt with 3 pounds in it. I dive a 7mm farmer john with full hood and gloves. I am in fresh 42 degree F water regularly. This setup works well for me. I know that if for some reason I needed to dump weight, the 3 pounds in my weight pocket will be sufficient to make my bouyant enough to get me to the surface easily. Not that I can imagine a situation where I would ever want to surface that fast.