I like Faster's answer, but of course, you must dismiss it if the red "wind vane" isn't free to pivot with changing wind directions. As you say that the red flag doesn't pivot completely around, it may be able to adjust to a sector of variable wind direction to allow for good sail trim for a period of unchanged weather. I wonder if the "vane" isn't designed to stand proud because in the position photographed it would be behind the pole and the apparent wind would be disturbed by the pole. Maybe Faster & I are wrong, because a better engineered vane would not have the wire hanging from it and resisting it's performance. Take care and joy, Aythya crew
Last edited by CaptainForce; 08-22-2010 at 08:36 PM.