Hello Kevin and all. Take a look at this reversible RW. It has to be threaded, but it has a roller on the bottom friction point, with a size 80 chain link pin for the top friction point, for use on a single rope. The tether point is on the left in the picture. If you flip it over, with the roller on the top friction point and the pin on the bottom, it develops about half the friction and works to take the heat of the hitch on a doubled rope. It could also be used as a friction saver at the TIP. Kevin I could send it out to you if you would like to try it out and see what you think.