I have a question. When I wash the boat or fish in the rain, water stands in the corners of the bottom of the floor. The drain is in the center. If I drill some small holes with inserts in them will the water drain or is there foam in between the sub-floor and the bottom of the boat? If the boat is full of foam the water would just fill the holes I drill and not really help at all. Maybe someone can answer my question. I could try it but I hate to drill into it if it is full of foam. "Ain't God Good"