Anyone use a camera on their glider trailer?

I'm thinking about mounting a backup camera(s) on the fin of my glider trailer (one pointed forward and one pointed backwards). My motivation is mostly to raise the odds during lane changes. I recently priced the hardware on Amazon. You can get a multi-camera capable 7" screen and two cameras for less than $100.

It's also becoming more common to record what the camera sees to establish fault in accidents.