I recently upgraded to a Supra Launch 21V (2005 model).

You can add me to the list. I had the same problem, but did not find the thread prior to my attempt to deal with it.

In my case, I noticed that a shop-vac hose would fit air-tight in a 1.75" hole. I drilled that out, and inserted the shop-vac, then let it run for about 15 minutes, removing the hose occasionally, to be sure that the water was not plugging the hose.

I do not feel I am getting all of the water because the foam remains soaked.

What concerns me is *not* the minor amount of extra weight in the boat, that some here have mentioned. I am more concerned with the added tongue weight, which is already greater than any other boat I've owned. I also do not like the idea of permanently stored water that can spawn mold/etc. If there is some method for the water to get in, however tight, there is a method for mold-spores/etc to get back out.

Thanks to everyone who has participated in this thread so that I didn't think I was imagining things, or that my boat was somehow flawed different than others, and saving me from wasting any of my time asking SC about this, only to be shot down!