I took mine to gelcoat, put 4 coats of barrier on it, then 2 thin coats of vivid. As the season goes on, I gently scrub the bottom to keep it clean and wear the paint down a little. by the end of the season it's time for another gallon of paint with very little of the old stuff left. This cuts down drastically on build up. Just scrub the bottom a little more or don't put the paint on so thick. Thick paint will chip and flake easier too.
Merit 25 # 764 "Audrey"