I bought a couple from Duckdog a month ago. Here one application I used the bracket for. Mounted a ram mount ball on the bracket and mounted the bracket on the rail on my North River back by the kicker.
Bolts with plastic knobs go through the bracket, then through the rail and fit up flush on the other inside of the bracket, a solid non moving mount.
When I put my Humminbird 798c si with the ram arm mounted to it onto the ball and positioned straight up, I'm looking right at the screen from where I sit or stand to run the kicker. Perfect height and view.
I painted the bracket.