I got a 3 pack of fenders at west marine. I lost 1 down at Cape May. And the other one had a hole in it from the beginning. its more like a slit. Is there some way to repair them? Will a inner tube repair kit work?
If they had not replaced it, it would probably Not be a Good Idea to patch one.
If you actually need the fender to do its job in a harder than planned bump the patch would most likely be a weak point and could fail resulting in far more damage than paying out for new fenders. You should always have spares on board for all kinds of reasons and uses. But only good ones not defective ones.