I couldn't watch the clip on my iPad. No flash player available. With my Scamp
Fith Wheel, and the trailer ball in the bed of a truck, the backup camera does me no good. I have one of those flags used for marking underground utilities, and have bent it to allow it to fit over the ball. I back up until the flag tilts, stop, get out and lowere the hitch onto the ball. It might or might not work with a bumper hitch, but it is cheap.