i bought a 16' john boat. cant think of any thing priced as low as plywood to make the floor and deck out of. i know that wood and water dont mix. so after lots of phone calls i found this stuff called marine polyester resin. the store owner told me when i put this on i would never have to replace the wood. now forever is a long time, but if this stuff will last 3 or 4 years that will be good enough for me. any thoughts on this stuff. but my main ? is he said not to waste my money on slip proof pain for final coat. he said to throw sand in final coat of resin. thoughts on this. next would it be best to paint wood first for my color and put resin on top, or put paint on last.