2. A rescuer is slung onto the route near the incapacitated climber's location using a helicopter long-line. They prepare the climber for extraction and then they are both slung off by the helicopter at one time.
https://en.wikipedia.org/wiki/Helicopter_Flight_Rescue_Syste...
The more realistic plan would be to have some friends ready and willing to come retrieve him if needed, and to potentially stash some gear/supplies at the larger belay ledges a few days prior.
yeah, you can, it's called hitchhiking. it's not very common; but it has be done, Lynn Hill talks about it in her autobiography. if the climber hitchhiking is good enough, the new party will be faster in the end.
It's relatively easier to quit a vanilla free climb.
Yea I have no idea actually.