I have never had an issue, but as you can see from the photos I also have a touchless cover that also protects the boat under a very large roof on a covered dock. We had a small tornado come through last spring about a hundred feet from my dock. Lots of hail damage to roofs on house, dock, metal building, 18 broken windows, totaled car from hail, but no damage to boat or touchless cover. Wind does not seem to be an issue. It really takes a lot of side force to even move the boat an inch while it is hanging, I can't imagine it ever swinging much.