Join Date: Nov 2008
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I like the foam idea. Another option is a big peice of billboard/banner type thick vinyl and epoxy. Not sure if this would work because I never tried it, but you can purchase epoxy in self-mixing 9oz caulk-tubes. It would probably work if you smeared that all over the offending area and applied some kind of mat or plywood.
Kind of hard to advise with so little info.