Actually some of the GeeBee floats are really good and some aren't. The small size are really good for a small airplane I've had so many sets I can't count them, from a Lanier Biplane in the mid 70's, to A Sig Cavalier, to a few Midwest Hots, and lately I've gone through two sets on a Dazzler. On other planes but that's the one's I remember. They are as much fun on snow and grass and gravel as the water. They come with a good instruction sheet, didn't you get it? If you do a search here I've seen it before. Also you can probably get a copy from GeeBee or Tower.

The larger GeeBees are not good, they flex too much and will collapse on a hard landing...