All I can say is shizzl rope slider. I took my time and put my system together very carefully, as I had already taken a significant fall a few years back. The ropeman is designed to be used with a back up hitch.
If you look at what arborists and climbers use, we ought to be using the same. A little more expensive, maybe a little more time consuming but you cannot put a price on coming home to your loved ones. If you cannot afford the better mechanical gear, just stick with hitches. Tried and true. Wash your ropes and change out your ropes, tethers etc when you see any where. Pretty simple if you do not over think it..