I have used this paint for last 9 years. put it on light, one coat. Holds up fine all year,april to sept. when they haul the boat they pressure wash it. after they block it i pressure wash some more. the first coat of bottom paint on the glass is the typical medium blue color,then each year I repaint with black. when I pressure wash I wash until the blue just starts to show thru,this way I dont tend to get the buildup of old paint. Six coats of black on it now and I can still see the blue. GOOD CHEAP PAINT