I know aguy who has a float plane and most of the time he's flying off of grass.It will wear the bottoms of the floats so he has to keep replacing them.If your interest in planes is float planes or amphibs,build them or buy them.Fly the planes you like,thats the whole idea of the hobby.I love bipes and float planes so thats what I build and fly.My float plane will get to water once in a
while and the rest of the time it'll fly off grass,but who cares,I'm flying the planes I love.

Just a thought Butchman