RE: Aeronca C3 ('Flying Bathtub')
Oh, I'm so jealous. I'd dearly love to fly off water; especially with a cute thing like the Aeronca.
Nearest decent venue for IC waterplanes is 150 miles away, though ... simply cannot justify it. Could fly electric locally, if I could commit myself to the "dark side".
I don't suppose that you have some video, do you?