Years ago I owned a Grumman Yankee and kept it tied down on the ramp in eastern NC. A guy next to me owned one a couple years older. One summer, a hurricane was headed toward us and a friend offered me his empty Tee hangar. When I got to the airport to move my plane to the hangar, the guy next to me had doubled his tiedown ropes, let some air out of his tires, and strapped 2x4s to the wings, like a homemade version of the spoilers above. I thought he was an idiot. Turns out, the hurricane blew the door off the sliding track, and the top of it hit my plane on the nosewheel. It pushed it back into the hangar and the tail and wingtip were damaged by the wall of the hangar. My plane was down for a month, and it was 6 months before all the repairs were finished. Meanwhile, my neighbor pumped up his tires and was flying the next day.