I think that you are right about stern weight and design, I'll put the water tank and marine batteries forward. Sometimes I do take on water through the outboard motor well when motoring, not allways though or when under sail. Wasn't there some sort of plug that came with outboard motor Commanders and Ariels? I belive that my "outboard motor" Commander was designed to be motored out then sailed with the motor up and the plug in the well. The outboard motor well has two bolts with wing nuts for the plug . Do these plugs still exist and anyone have a motor well plug that a mold could be made from? I would like to have one for my Commander for sailing and to keep water out when docked.