Rainer:Also, any suggestions for calculating exposure suit lift at depth? I had no idea what to put in this cell for my 7 mm wetsuit and 6/4 mm hooded vest. Thanks!
Actually, neoprene compression at depth and loss of buoyancy has very little (if any) effect on how much lead/lift do you need. Aim for neutral buoyancy at 3m (10feet) with empty tank. This usually equals being somewhat negative in the beginning of the dive (-delta).