I know there is a ton of info on regular light bars, but has anyone mounted a rear facing light bar or light? I do a lot of towing for my business as well as trailering our race cars. Often we get stuck loading up cars at night. Instead of holding a flashlight or relying on the crappy bed light it would be nice to have a better light shining backwards. I know I can buy most any light out there and mount it backwards but I am trying to avoid drilling into the roof. I use a tonneau cover so I don't think a back rack would work either.