The Pat's easy change is so easy to use that made a dangerous mistake...I hooked up my tiller and was happily tilling the garden last year when about 50 yards in the first row I hit a rock.
The tiller climbed up the rock, OUT OF THE EASY CHANGE, and along my 3ph lower links before I could shut it down.
The fault is 100% mine. I had the easy-change 'propped open' and had forgotten to release it, so only gravity was holding the tiller into the hooks.
Some damage did occur to the easy change spring setup, so now its less safe than new, as the springs got damaged, but it's still working.
It's a great product, I love it, but make sure you don't get complacent with the position of the latch.
(Used on Kubota B2710)