I was a tow truck driver in my youth. Believe me, I know how to tie a vehicle down. I had exactly one vehicle move on me because I didn't tension it enough. I was afraid of bending the cheesy-looking suspension on an old Japanese econo-car. The car didn't go anywhere but an inch or two, all straps were still attached.
Let's just agree to disagree on this one Max, and I'll leave mine in neutral while y'all leave them in gear.