Yeah, that is my issue though, I'm on a grass field and have a slab at my new hanger but it's not perfect. And I'd think a sitting plane on a not perfectly flat surface would place a lot more force trying to get the plane moving than a plane just turning, no matter what the rate. You're probably right that its strong enough to deal with it either way, but it's the not knowing for sure that worries me. If you've been keeping up with my stories, I tend to have crazy things happen to me so just asking to be sure.
Thanks,
Glenn