ORIGINAL: MinnFlyer
two things I want to point out...
1 on takeoff, be sure to keep your wings level. If one float dips more than the other it will lead to a lot of drag and a turn to that side. Using rudder to correct the turn could make it worse and cause the deep pontoon to dig into the water causing an abrupt end to the flight.
2 On landing, I like to add 1 or 2 clicks of power just a second or two before the plane sets down, just to give it a little more pull to overcome the drag of the water