I have another oldie, no name. It mounts on a ball hitch. It has a big bolt on the mounting. Take ball out and mount on metal hitch. It has a transom mount on the top of the adjustable height. It swivels from the on ground position. Lift and walk around vehicle until in proper loading position. Fix swivel to no movement. Works well w/boat under 14" and under 200 #. I have owned/used since 1980. Bought from an old timer used.