what will clean hypalon effectively?
It's an Avon (west marine) 10' RIB inflatable boat. The hypalon, not the fiberglass bottom, has some stains on it. The usually automotive vinyl cleaner I use doesn't have any effect. Is the 3M vinyl cleaner any good?
If anybody has had any luck, give me some ideas.
I have one big red stain, it looks like a throwable cushion that was red sat on the boat and the dye from it got on the boat.