My remedy was to get a back-up camera. It is supposed to mount on the rear license plate, but that doesn't give me the correct angle so I made a removable bracket that hangs on the tail gate and looks down directly on the hitch ball. Very cool, no more hopping and skipping out of the cab for a look. It's all there to see on the screen.
The additional cool thing is that the unit is wireless so after I'm hitched up I can move the camera inside the horse trailer and I can see that the horses are OK while in transit.
The problem with permanently hooking it up to the truck is that the camera is water resistant, but the wireless antenna unit isn't waterproof at all. But all in all, it's really cool.