Our club members from Northern Ontario Canada fly a lot of float equipped models because that is the normal situation in the full size plane world up here. The rules we follow here sets the wing incidence between 2 to 3 degrees of positive incidence on the wing to float level position ie wing is higher at the front. The CG in relation to the float step is extremely critical. The rule is that an imaginary line is drawn from the CG position at the bottom of the wing of a high wing plane at an angle of 7 degrees (perhaps the 7 degrees mentioned earlier but applied to the wrong situation) back from vertically down. The step should be on this line wherever it is located below the plane in its mounted position. This is a suitable position to have minimal float contact but still control when the plane is ready to lift off. The float should have a step which is straight across the float and not pointed as some. The step also must be deep enough to float the plane near take-off with the tail part of the float out of water. This normally means a step of 1/2 to 3/4 inches. The length of the float is also important. It should be between 75% to 80% of the length of the fuselage and the step located so that in its proper position as mentioned before, leaves about 3 inches in front of the prop. If there is not enough float ahead of the prop there is a tendency to dig in when landing and taking off which gives a lot of spray and creates multiple problems. The floats should be mounted with about 2 inches of clearance from the prop. Normally the width between floats centres should be about 25% of the wing span. The centre of the floats would normally about the position of the wheels. The floats also need to be mounted almost parallel to the centre line of the plane. A little toe-in can be tolerated. The power should be applied slowly on take-off and up elevator applied to get it up on step then almost neutral elevator until lift-off. It is critical especially if there is above five knots of wind to keep the plane within 10 degrees of straight into the wind. Otherwise if a wing starts to lift early it is hard to prevent a tipover.