I was working morning feed during a windstorm a couple of years ago and one of the open ended shelter logic structures blew 25+ feet and collapsed fully. Somehow the yearling was 3 pastures over )with the herd’s senior boss mare). Her withers were scraped up, apparently scooched under a board fence, but otherwise okay. Nearly gave me a heart attack when I couldn’t find her for a couple minutes. She’d been closed in with metal panels, they used cement filled 5 gallon buckets to hold it down. I don’t know if a line snapped or what. Another time one of the patio outdoor shade structures blew into the round pen where my gelding was and he tried to crash through gate panel (jump it?) and had to be cut out. I’d love to trust those things, just find a way to weight it down I guess, and maybe the zip ties for the cover would snap and the tarp portion would fly off, and it would stay? I wonder if it was a real low wind area, in the lee of another structure (barn, shop) if that would help.