We use silver lacquer on floats because it takes so little prep. On the commercial planes, they're painted every year or two depending how bad they look. I've never found a better paint than lacquer for floats. The other paints acrylic enamel, polyurethane, acrylic urethane and any other modern paint just don't seem to stick very well.
All of them stain, so the lacquer is the easiest to scotch brite , tape off, wipe down with lacquer thinner and shoot new lacquer. I can do a set of Beaver floats by myself in one day.
Klaus Marx - Piper Pacer Pilot
Juneau, AK & Wenatchee, WA . . . . . . Click on Link Bar to view the 'non-profit' group.