Rudder trim tab

[sonex892]

Have any of you guys, or girls, successfully done a rudder trim tab for a jab 3300 Sonex? What I am after are dimensions, or even a photo of something that works. Just as a starting point.

I have tried and used, for the last few years an adjustable spring which pulls forward pressure on the right pedal. The same principle as dial-a-trim. It works reasonably well, but I find myself forgetting to use it until my right foot hurts from standing on the pedal. What I am thinking of, is a wedge type tab that doesn't extend past the rudder trailing edge.

Thanks
Steve
Sonex 892