Isn't too similar to this one? And its tight with the rottor, no movement to the sides.
Will it not pull back with the drag and make it go out of the water?
I'm planning to put some light long spring or light rubber band from the horizontal bar of the pontoons.
Soft soft Soft so it can do that and return where's not enough wind to turn with air rudder
the one you made has much more metal much heavier and more surface area to cause more drag and it will also change your Center of Gravity with that weight so far back and tail heavy planes are no fun
your carbon cub has enough power for that wire type of rudder so why not replicate it from heavier gauge push rod wire and a piece of credit card plastic