You’ve done they same thing I did. Harken small boat car and track on the underside of the boom. Lift the dingy up, use the traverler controls to move the dingy out to the end of the boom, swing the boom over the side, and away we go.
The main difference is I installed a Harken 16 self tailing winch. I guess I am still a sailor at heart.
I’ll post some pics tomorrow.