i have a 23 walk around and have a 250 verado on the back its almost 700lbs plus the live well and i raised the transom from 25' to 30' and it still gets just as much water in there as b4 when i had a 200 2s merc on the back....my advice would be to shore up that bulkhead or put a bracket on it..i put bigger holes in the drains and put a sold bullhead in vs the teak one on the hinges that really did nothing because water would just poor through it.i have pics of my boat about 95% finished in the picture section