The setup I use is one in front around the suspension and one in the rear to keep the wheel vaguely centered.
![[Linked Image]](https://i.imgur.com/4ClZULT.jpg)
![[Linked Image]](https://i.imgur.com/9DppA2g.jpg)
I have a toy hauler with a LOT of weight in the front due to tanks, generator, propane, etc. I probably wouldn't advise the M3W being backwards in a trailer under normal circumstances.