And now for something completely different. We (the SC) have an 18' Rigid Raider as one of our boats. The hull was originally foam-filled which made it unsinkable, but this was cleaned out a good number of years ago when the boat was overhauled. We'd like to refill it. I guess I should ask on specific forums, but does anyone on here know of a good quality and fully waterproof expanding foam product that could be used? It would almost certainly have to be a two-part product so it 'cures' and not just set by evaporating vapours. Any ideas?