But don't zip-ties only bend easily in one back-and-forth direction, not side-to-side? Or am I missing something here?

Oh, okay, never mind, you edited your post. No, just using that as an example of wear, but admittedly it was a poor example. I didn't mean to imply you would be in that severe a situation 100 mph winds, it was the distance of 100 miles down the interstate. Heck the old truck I was driving was doing barely over 50 anyway.