Re: longer hitch for launching boat
Back in the early 80's I had a Venture 17 that had a tongue extension on the trailer mounted on the left side of the trailer tongue box that was held by two metal straps welded to the trailer center bar. To use it, you had to switch from the main trailer ball to the one mounted on the extension and extend the extension it's full length. The problem was that you had to be careful on some ramps with a steep incline not to "High center" the extension until the vehicle was on the same incline as the trailer and boat.
Worked fairly well at Lake Mead when the launch depth was very shallow, but you might have water over the rear wheel openings in a Ford Bronco.