I shot one for two seasons on my hunting set up. Worked as advertised with my 384 grain ACCs. When I was doing some testing with heavier 500+ grain arrows, I did experience some of the problems mentioned above, but I'm confident it could have been easily rectified by increasing the spring tension, which I did not do as I had no intent to shoot that heavy of an arrow.
As for remembering to re-set it, it becomes second nature very quickly. I'm shooting a WB this season (wanted to try one out), and although I've been flinging arrows through it for 3 months now, I still catch myself trying to reset it after the shot
If you try this rest, I highly recommend the V spoon launcher option.