Flew mine this afternoon with the .61 on it. Much, much better. Glad I did it, almost 3 great flights. The reason I said almost, last flight, I dead sticked it in, and hit to hard, and snapped the floats off it. The rudder cable kept the plane and floats together. Minimal water got in, all I have to do is fix the fuse for the landing gear. I highly recommend the .61 over the .46 for this set up.