As a quick follow up: how do you all tie it down? I've looked at chains, web straps, D-rings and welding on d-ringds, flat hooks to the side pockets and many other options. Do you use a strait on pull at four corners or cross the straps to stop motion in any direction.

I've tied many things down but nothing that is as big as the 9,640 lbs fire truck. Ant ideas or suggestions?