Looks like you're going to be the first with a Hog Bipe on floats.

What's the size and weight? And power? If it's low on power, you might have trouble with floats. Extra power helps you get off easily and also helps drag the floats through the air. Probably some 33-34 inch floats would work OK. Order an extra gear and add a ply mount block behind the wing. You'll have to slide the lower wing in between the strut (gear) legs for mounting unless you re-locate both struts to the wing.

If my wing fits well, I don't bother with anything extra, just put floats on it and go fly. My buddies use silicone seal on the saddle for a tight fit and we usually put Vasoline on the saddle to keep water out. I use halves of spinner bubble packs to cover servos that are hanging out the bottom of the wing. Seems to work OK in keeping the big splashes off.