You mean like this?

I have a few acro planes on floats, but a buddy gave me this World Models Sky Raider trainer and told me to put floats on it. No problem with a trainer, right. I used Niagara foam core floats http://www.foamcorefloats.com/. The first few flights were great with a Mag .52 4-stroke in the Raider. The second weekend, the wind came up slightly. Believe me, you need to "fly" the plane all the way to the beach or this will happen. High wing planes, especially those with dihedral are bad for flipping.