My product (that I bought) is much lower tech and cheaper.... but it works for me. I use the one that utilizes 2 long high vis yellow poles that temporarily mount on the hitch and ball. When the 2 poles line up and the one on the ball just falls off, you are good to go! They are held in place by magnets.
You do have to put them on and take them off each time, but only takes seconds. Only time we had a small problem was when the pole on the hitch was put on "out of plumb" and this caused the alignment to be slightly off. Learned that lesson, and no more problems.
Tom