md2lgyk wrote:
Please don't take this the wrong way, but you need to work on your backing skills. I have no rearview camera or any other "aid" for hitching up, yet even by myself it rarely takes more than a couple of minutes to line up the ball and coupler.
But, to answer your question, I'd probably use red or yellow paint.
Maybe some people are better at it than others but I too have this issue, I can line it up with a back up camera but the depth perception is not all that without good light. Maybe if I moved the license plate mount camera somewhere else I can do, maybe on the trailer instead.