OK, take your single float Somethin' Extra and make all the floats retractable. That's what we are thinking about.

I recall I read that the bottom of the tip floats should be even with the top of the main float.

I also have the photo of EvanRCU's delta on floats. I think it's a Jerry Smith Outlaw delta which isn't made any more. We were just looking for something different. I think we are going to order some retracts and make a center float for a .46 sized plane we have or an easy ARF. Probably use a second set of retracts (mechanical) for the tip floats.

I have an old article and 3-views of the plane that were published back in 1975 in RC Sportsman magazine. For an experiment, we'd rather mod an old airplane. Also, it seems that a high wing plane like a Stick or one like the Somethin' Extra with plug in wings would be easier to handle. With a low wing, it would be a pain getting the wing in between the float and fuselage.

My curiosity with the single float was from what I have read. It is stated in some aritlces that the single float should extend 80% of the prop length in fromt of the prop disk. This makes a fairly long forebody and a shorter afterbody on the float. I guess the long float out in front is to keep the front from digging in during take off and landing. I don't know. Also, the step on single floats in supposed to be deeper than the step on dual floats.