RE: GP Super Stearman
Sorry I have not flown it as a float plane. I did put in the larger motor and the 4 cell battery so I could if I got that adventurous. The Power 32 brushless makes it jump off the grass runway we have. It does not float like the Great Planes Cub but with full flaps on landing it will barely roll on landing. And while talking about it, you do need to mix down elevator into the flaps.
BTW, the SS is my favorite and reason for being on this forum.