Only time I've had an issue with wind, was when I lived down in Md not far from the water, and a hurricane came up the coast. At the time, after I aligned my dish, I drilled a small hole through the mount and pipe, and put a nail in the hole to keep the mount from turning on the pole. I went to work the day of the hurricane, and came home to find my dish pointing north (the eye had passed inland to the west, so the winds were coming from the south).
Anyway, the wind was strong enough that it sheared off the nail I had securing the mount. I guess I was lucky that it didn't pick the dish up off the pole. But the reason for posting, is that if the dish is aligned well, even if strong winds turn your dish on it's pole, you can get your alignment back quickly if you've drilled a small alignment hole through the mount and through the pole. In my case, I just got a new nail, rotated the mount around on the pole until the holes lined up, stuck in the nail, and I was all aligned again.