I have a US Yacht 18 (1982)daysailer. I've only been sailing a couple years and have heretofore trailered the boat. This year I gave in and put in in a slip. I've noticed that I carry about 2" water in the bilge, and I originally thought it was supposed to be there for some kind of ballast, but I'm pretty sure that's not the case at this point. But I don't know--- there were no noticeable leaks when I put it in, so maybe rain is getting in somewhere. My question is :is this normal for this type boat? What do I do about it--- install a pump and figure out where to put the outlet, pump it out manually once in a while, ignore it, put up a boom tarp? Thanks.