From Sound Guy: "..... tires shrink noticeably as they cool so any X-Chock installed even as much as an hour of arriving on-site will loosen to the point where they have no grip on the tires at all."
And Old Biscuit wrote: ".....Based on MY life experience, knowledge, criteria and personality I do things others might not. BUT I make that decision and deal with any consequences should I 'miscalculate'."
And I am also from the same Old Biscuit mold in that I make my own decisions on these types of issues. I will also bet that Old Biscuit totally understands the cooling of the tires, as I, and checks and re-tightens the chocks after the tires cool. :S :h
:B ;)