Just completed my first test flight with this setup. I'm very pleased. Pops up on plane quickly, short takeoffs, and nice handling. With an OS 75AX and a 15x5 wood prop, there's plenty of punch for playing.
The specs are:
36" plans built Fly Baby floats from http://www.rcmplans.com/index.php?ma...oducts_id=1615
This kit is about the right size, too: http://www3.towerhobbies.com/cgi-bin...?&I=LXJ929&P=7
Two large 60 size struts. These will work fine, but the aft one must be bent in the center to conform to the wing's dihedral: http://www3.towerhobbies.com/cgi-bin...?&I=LXJ924&P=0
I used some slightly longer bolts at the standard landing gear and wing hold down areas to mount the struts.
I have the CG set at four inches from the LE for both land and sea operation, the wing incidence at two degrees positive compared to 0 for the float tops, and the CG is 1/4" aft of the steps. I added the ventral fin (held on with the tail feather nuts) just in case. There's almost no float extending beyond the spinner, maybe 2", but up elevator keeps the prop out of the water during taxi, so who cares. The smaller the floats the better in this game, I think. No water rudder. If it won't go where I want it to, I just idle back and she'll weathervane into the wind, then it's easy to steer with the air rudder and throttle.
Very quick to setup at the lake: four bolts holding the struts and wing in place, and away you go.