I came across this amazing photo a few days ago and couldn't resist getting out the brass stock and soldering iron. It works like a charm, one end pin is spring loaded and it mounts in the towing eyelets just like the real one. It pivots up and down and is easily removable, I just need to add some detail and paint.



In action:

http://www.youtube.com/watch?v=3JWc-ceFmS8