Sounds like wind sensor is retracting; much better to have it auto retract that be ripped off and/or damaged? If you feel there is no wind, no reason to retract, the sensor may need adjusting; otherwise, there is a switch to turn sensor off, but highly recommend leaving sensor ON if any doubt on wind/ potential wind damage. Remember, sails have moved huge ships for thousands of years.
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10