From years of guiding, I found the most common scenario was that, somehow, regardless of all the effort and coaxing, people convince themselves they just can't do that one move. Having a system you can chuck on, haul them up 2m, and then whip off and return to normal belaying is the one I used most. For me, this was grigri, said pulley, and prusik (or tibloc). I agree tiblocs can be run back down the rope but it can be quite hard wihtout practice or on old fluffy. |