Simple "Trim Tab" Windvane Design

A short video to introduce the "trim tab" windvane design I used on my sailboat. Although I built it flimsily, it worked surprisingly well even with very mild winds. The hinge design prevents the boat to over-compensate compared to the more traditional "trim tab" used by sailor Bernard Moitessier. Should I own a transom-hung rudder sailboat in the future, I will most probably build the same design again (more robustly this time).