I use to dread (see above posts relating to profanity/injuries)removing/attaching my 1 and only rear implement before I got Pat's system so it would stay on the tractor all the time. This reduced the utility of the tractor somewhat.
After Pat's, it is on and off all the time. 1-2 minutes to hook/unhook max. No injuries. No profanity, so I might get into the pearly gates yet. Other than the tractor iteself, it is the best money that I have spent.
At one point I was looking for a quick hitch. I got tired of waiting for a particular hitch to be produced. Looking back, this is a better (and cheaper) system because it will fit more implements without having to resort to welding adjustments to complete the implement-tractor attachment.