SO they leak a little..Does that out way the beneift of emptying the entire hull in like 5 seconds? For some maybe, like a rec rider who goes out and ride on his lake for fun. I compete and having a 2 minute run, i cant afford to be waiting for my duel bigle pumps to pump out the water which takes alot longer. With a scupper, by the time i get to my next set up wake it will be all gone with the scupper. A scupper will leak a little, and if installed right, hardly any. Its a personal choice and i know that but its the benifits that out weigh the risks.