Underway fine but that’s not when the boat sinks !

The down scuppers accept a standard 1” drain plug that keeps water from flooding the decks when the boat is heavily loaded or if equipped with over weight power

So what happens if …..
1. it’s raining hard,
2. or take on a wave
Without draining scuppers the boat sinks unless manually bailed fast enough - or specially rigged top side bilge pump ……

It’s just a boat - some designs are good, some not so good .
I believe several have raised floors and re positioned scuppers even when rigged with single outboards.

In the twenty years I've owned and operated two different SeaCraft models the scupper design hasn't presented much of a problem to me. It may seem counter intuitive to have a couple of holes on the floor, but my boats have always "self-bailed" (drained) fine at rest or underway, even in heavy rain. True, if several people congregate in the stern (like when landing a big fish), indeed water can flow up into the boat through the scuppers - but it's real easy to throw a couple plugs in the holes when several people are aboard. I also have two bilge pumps, and am pretty careful about keeping the batteries charged up. So, for me at least, it's been a non-issue.

Repowering with bigger, heavier four stroke outboards resulted in deeper submersion of the stern at rest, and drainage problems became a more frequent complaint. When replacing floors or doing a total rehab many guys have opted to raise their decks and redesign the scuppers, to accommodate the heavier motors.

Interesting -appreciate the info