No deck or seat drains inside the hull. Actually, the toe rail is mounted on a raised area around the deck, and the scuppers are actually molded into the deck not cut into the toe rail. When the factory was bolting down my stbd toe rail, one of the bolt holes was accidentally drilled into the scupper. So they left out that bolt and just bunged the hole in the toe rail - but leaving the 1/4" hole in the scupper! I told the original owner about this and he said 'Yeah, that always was a wet bunk.'