I use the ball-type scuppers on my Olympic. They work great for a couple years, then need replaced. The rubber edges get stiff, so the ball doesn't seal very well.

After reading that article about sinking boats, I've got bigger problems than a worn-out scupper. Mine are basically right at the water line. With a full tank of gas and a cooler full of fish/crab on the swimstep, they actually sit under the water line!

Good thing it stays on the trailer most of the time!

I've been on the water overnight in the rain and never had any problems with water on the deck or in the bilge. Where's it all going?