In reply to Anonymous:
>"rescue/ haul someone up who has fallen off"
I once "rescued" a guy who had literally extausted their arms haulling themselves up the VF cable.
In practice that meant belaying them on a very tight rope over a 4 or 5m steep section they were having real trouble with, such that every inch they managed to move I could hold. Inch by inch he got over the section and onto easier ground.
I had a short bit of 8mm rope, couple of crabs and belay device. That was enough. If he'd been fully incapacitated I doubt I'd have had enough equipment to arrange a proper hawl - he was a big guy - even with pulleys and me as a counter-weight it wasn't going to be enough. In any event, if he was so incapacitated he wouldn't have made it on the easier ground and a full on rescue would have been needed anyway.