I put them on both of the pontoons on my PT-60. Does a great job, but to keep it simple, I rigged it with a 2-56 rod between the two. Uses one pontoon mounted servo hooked to a Y harness. A bit ungainly, but very quick to switch from floats to wheels to skiis. I have a Balsa USA 1/4 scale cub that I will build as a strait float plane. But that is another summer away.