Well.. almost, Dave. When I used mounted equipment on the old WD, I left the drawbar attached to the tractor. The pins that allowed you to set the drawbar height were removed, letting the drawbar float up and down. A pin went into the equipment and through the drawbar. There was also a pin (well.. almost a clevis-like device) that attached near the front of the drawbar.
I made it sound complicated, but it really wasn't. Some people I knew actually claimed that this first traction booster connection method was easier than using the snap coupler, since the drawbar did not need to be completely removed.