There is a whole new line of excellent plastic floats called Aerocets.
Although I don't know how that is relevant.

One thing about mogas, it is best to get the mogas that airports have
..They typically get car gas that does not have the car gas additives.
No one really knows what these car gas additives will do to an aircraft
engine. Also, keep in mind car gas is NO LEAD. Lead has lubrication and
cushioning properties. I know people complain about the lead deposits
on their spark plugs, but lead has beneficial side effects also. Then
there is octane. The gas you use needs to have enough octane so your
engine doesn't knock. This depends on your engines compression ratio
and altitude you fly at. Lastly, avgas has stabilizers so it doesn't
gell when it sits for long periods of time, mogas doesn't.