On my own deck I just have gelcoat, laid down nice and neat in one shot, no non-skid needed. There can be water and herring oil on it and it isn't slippery at all. Sure the couch can slide aft when the throttle is slammed forward, but that's because of the feet they use on them so that house hold floors don't get torn up while moving furniture. Boots, bare feet and everything in between have been aboard with no real slipping and sliding (ice doesn't count in the winter time) however bare feet on the metal hatches in mid August are a bummer. Deck gets slammed and banged up every season, concrete runner traps and anchors tossed about, doesn't do much damage really. Washrails and trunk top are covered with non-skid - but not with any of the methods mentioned here so far (going to keep that one as a trade secret, sorry guys) and the only thing that has damaged the non-skid in 12 seasons is one metal shovel that was driven down onto the washrail. Non-skid areas are comprised of 4 different levels. There's the easy to wash section on the hauling side, there's the "holy crap it's rough out" area when you need to go around the side of the cabin in weather you'd rather not be in, the regular non-skid which is good for general use and then there's the rest of it that I've called "ass-compliant", a nice soft texture that girls in thin bikinis don't mind sitting on and sliding their soft skin against. All 4 styles can be done at the same time, same mix, same roller. Sometimes I think you guys are trying too hard and thinking into things too much. My 2Â¢.