|By Buff Johnson |
Jul 7, 2010
Adam -- what is being asked for is to have a terminal knot in one end of a rope attached to a solid anchor; whether it be trad, bolts, tree, boulder, whatever, as long as it's a solid anchor, slap an 8 on a bight and clip it to the anchor -- or tensionless wraps around a natural feature and 8 that to itself; Luebben's rope anchor distribution-rig works well, also. Then that line is jugged/jumared for access by the rescuer -- this is a single line, so not the typical double stranded rappel setup.
Ropes of adequate diameter for jumars -- so, I wouldn't look for too much help from the 8.0 halfs/twins/tag line.
If climbers can fix lines to help responders get to an injured person, that can be a tremendous advantage. Also, if at all possible -- pad edges the rope will run over. Make the line safe & solid; would you trust your life to it?
Statics/low stretch work better than dynamics, but by all means, if all you have is the dynamic, go with it and fix it to the anchor.
(Also note, not RMRG response; this is just what I would look for, and felt I answered something that probably is a good question to have been asked).