I'm taking on approx 1 gallon of water when boat is left in slip over the weekend. I believe I've narrowed down leak to the swim platform. Since the bolts on the inside of the transom aren't easily accessible, what is the best way to go about fixing leak? Back bolts out and coat with sealant? Seal around bracket where it meets transom? Boat is a 2004 chaparral 220ssi. Thanks