Regarding the scupper issue, I left 3 1/2" from the sidewall of the boat to the edge of the existing floor I am going to pad my stringers 3/4" and lay my new floor to the edge of the existing channel this will give me a 3/4" channel around the perimeter of the floor. Also on my last boat Hydra Sports Vector my floor drains had ping pong balls which would allow water out and not in, although they were set in the floor (vertical) and the Sea Craft will be horizontal I don't see why they wouldnt work. Also my floor has tubes that drain into the bilge I am thinking of doing away with these ????? I will trailer so I don't forsee a problem but will try and adress the issue a bit
