Surely the boat must have a strong inate tendency to hobby-horse if 50lbs makes a difference? That means that if you're sailing along and a crew-member goes to bed in the forepeak, the boat characteristics change?!?!
I have a 600 litre water tank under my V berth bunks. The hobby-horse characteristics hardly change at all from full to empty and that represents 600kgs or 1320 lbs or 40 Rocna 33lb anchors
. The only way I notice any change is that the water line rises in the bow. OK my boat weighs in at 25000 lbs but still . . . . .
I support Cam in the belief that imagination is a wonderful thing.
Sorry, don't want to sound disparaging but if my boat was that sensitive I'd be seriously evaluating continued ownership.