AircPirateNinsei,
I love your Sea Duck! Can't wait to see the plans. I have been building FT planes for over a year now and love everything about them and the whole FT philosophy. But, I like to fly off water. Peter's paper and PU waterproofing system seems like an effective way to handle the materials problem. Now all that is needed is a few design modifications to existing air frames. I am not at the point where I feel confident to do the design changes myself. Let's hope these new models designed to be a base design for modification and experimentation will lead to something that floats. Keep up the good work.
Regarding wingspan for the Sea Duck, my sense from the photo is that this design looks to have a lot of fuselage for the wing area. Off water, weight is always trouble. More wing area, without fuselage increase, might add lift to compensate for the extra weight needed to waterproof the foam. My transportation limit (behind the seat of my pickup) is about 45."
Thanks to you and everyone else who keeps this hobby fresh and interesting. I am retired now and must admit the amount of time I spend with my new passion is "obscene."