Before mine, there were four posts in this thread mentioning tie-downs and six mentioning gust locks.
I'm not concerned about banging control surfaces as long as I remember to install my gust locks. And if I forget, at least the damage will be confined to my plane, whereas a tie-down failure could total multiple aircraft. My gust locks hold the elevator in a slightly downward position, so a tie-down failure risk is minimized by having the airplane pointed away from the wind.
I have seen planes parked at Oshkosh with external spoilers that look like small pool noodles on top of the wings to prevent the wings being lifted by a strong wind.