ORIGINAL: barred48
I put the 45 FSR on the Goldberg Seahawk last night and I will try that. ...I put a 10 x 6 prop on it (I have an assortment of pitches and diameters to try). I am very concerned that the prop is too close to the water already and it still could use more weight on the tail. I think in the end that I will wind up putting the 32SX on it and the CG will be right and the power will be sufficient.
Douglas,
This engine will give you much better performance for a sea-plane, with an 11" diameter prop. An 11x5 would be a good choice - much better than a 10x6, about 25% more static thrust.
Change the angle of the floats, to bring your plane's nose up!
You don't do this by changing the C/G location. Move the airborne battery pack back in the fuselage, instead of just adding lead.