Fellow Sailors:During 15+ knot winds, I sometimes lose the ablility to set a course, and instead find myself blowing around in circles, at the mercy of the wind. I then drop the sails, and wind up motoring back to the dock. The rudder is working properly, however it seems to be inadequate to maintain my course. This happens where the two rivers join to form the harbor, and the winds get blustery. Today, it happened with just the jibsail up. Anyone else have this happen to them? Thanks much for any and all replies.Psychotom