For the back hitch i put one of these on (it was 20 bucks at the time) It slides on and off through your trainer hitch.
http://www.etrailer.com/p-5443.htm
My dealer gave me a tow hook assembly they pulled off a rig and I swapped the chrome D-ring over on the tow hook.
I also put an LED license plate frame around my plate, ran the power cable through the hitch and made a quick disconnect should i tow a trailer.
Granted when I tow my little fishing boat I have to pull off the plate, but so far I've never been bothered about not having a rear plate on when towing.
When all was finished i was out about $40
I looked at the other options out there and just couldnt bring myself to spend the $$$ some folks were asking. (yeah i hate to pay for crap i can do myself)
If you want i can post a closer pic of the setup. (I know i said $20 in the last post but i forgot to include the LED license plate frame)