3 or 4 summers back I was testing a seaplane for a guy and, as I recall, it had plastic Gee Bee floats. I have flown several different types of floats of all kinds, foam, fiberglass, plastic, wood, and I noticed these had the worst water handling of any of them. His plane was a .46 powered trainer and it still had trouble getting off the lake. On about the 3rd weekend, one of them leaked and that side of the plane went down. In my opinion, do not count on them.