Maybe this teflon tape
http://www.layline.com/prodinfo.asp?number=JTTJapanese Teflon TapeImported all the way from Japan, this tape is great to use around your centerboard or daggerboard to keep it from slopping around. It has a sticky back on one side and a very smooth, slippery feel on the other.Sold by the foot.I haven't tried it yet, but was going to get some for my hatch. If you get it before me, let me know how it works, and I'll do the same.Kevin