i'd like some idea pix
When I have a few minutes I'll draw something up in Sketchup and you'll see how easy it should be. The basic parts are 1x1 angle iron, some small tube, some small solid bar, a small bit of flat plate, a small bit of square tube, and a cotter pin of some sort for the quick disconnect. You can get all the parts at any hardware store for I bet <$15-$20.
Here's mine........Extremely talented fab work required and VERY expensive to recreate