RE: Show us your Beaver!
Paul, I am using the same motor and prop as Wade (2-blade).
Another member in my club flew a 20 lb Decathalon on floats with a Saito 1.80, and it flew pretty well. So, I would guess that it will fly the Beaver, too. I keep promising to weigh mine, but I never seem to remember... and I rarely see the guy in our club that carries around a hanging fish scale in his tool box. Next time I see him (and I have the Beaver) I'll be sure to get that info.
I am intersted in seeing your removable tail modification, too. Post some pictures!
Noah