though floor scuppers

[jongolds]

What's the problem with the through floor scuppers? I haven't seen anything specific but from reading posts here, I get the impression that people prefer to switch these to go through the transom. I was just wondering why. I hadn't known about these before buying my Tsunami in November but when I looked at the boat and saw them I though they were pretty cool. Do they not drain well or does water come up through them while underway? I never looked back to check then while doing the sea trial. Now I'm nervous.