I have had this RE Unicender for about 3 years and have never used it much because I did not care for how it functioned slack tending. I added a couple bearings and a fixed gate (parts I salvaged from my daughters old razor scooter) to help with slack tending and to keep the rope trapped along with a custom built tether for a Rope Wrench to add to the system. The tether is made out of a Black Diamond 10mm dynex runner 30 CM 22KN that I cut, reconfigured and sewn together. I then sleeved it with a 1/2" tent pole splint and added the marine heat shrink tubing for a finished look. Splint was 4 bucks and sling was 6.50 at REI.