scubafool:I think that cummings66 brings up a good point. I have seen it said many times to weight yourself neutral with 500psi at 15'. I believe that you should be neutral at the surface with an almost empty tank, allowing you, if needed, to descend once again.
A agree, that's how I'm configured and what I meant by being able to ascend slowly.
Way too often divers swing from being grossly over weighted to being weight phobic which is even more hazardous. A few extra pounds really won't matter if you have good buoyancy control. A number of times I have carried and extra 4 pounds in my pocket for a diver was testing a new reduced weight, and it don't bother me a bit. This is all applicable to diving wet or dry.
Many of our shore dives end in the shallows and it's nice to be able to diddle around in 6 feet of tidal water where the light is bright and the water is warm.
Pete