An internet friend gave me his stability model, which is based on using Runge-Kutta integration on the equations of motion (i.e. F= ma, etc).
I used it to do some parameter studies for the response of a flying Moth to holes in the water.
The first plot is the response of an elevator ( tail foil ) controlled model, for several different wand leads. Wand lead is the distance from the main foil to the point that the wand intersects the water. Distances in vertical and horizontal axes are in feet ( = 0.3 m ) and the boat is moving at about 30 f/s.
First conclusion is that more wand lead is good.
Basically the further the wand is in front of the boat the greater the damping effect on the system is with less overshoot at the peak but a quicker response time before the wave. Definitely seems better to be further out in front.
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