RE: Grumman Widgeon
I designed and built the first ever RC Grumman Widgeon in 1967. (See Sept 1968 Flying Models Magazine for the construction article -- I think that they still sell my plans.) Won first in flying scale at Brimfield, Mass in 1968. It was about 1/7 scale, two Enya 60's.
Now have a 1/4 scale Widgeon from G&P fiberglass/foam kit. Originally designed by Al Franklin of Gig Harbor, Wash. Two Ryobi 31cc weed trimmer gas engines, 50 lb. 10 ft. span. Won pilot's choice award at the Lake Havasu float fly. My wheels are dummies, but Robart sells a complete scale retract system for the plane.
I have flown this 1/4 scale at several float flies in Southern california, as well as Lake Shuswap in British Columbia and Lake Havasu.
It originally had the Coast Guard color scheme. Everyone building the 1/4 scale was using those colors, so, after an unplanned very hard landing, repainted with a color scheme of a Widgeon at Chino Airport.