Yep, that's why this year I bought some huge treble hooks cut off the points and ground them down. I can use it as a grappling hook if I need to.
Like ShadowAce, I made the same kind of rig from a trebble hook, and have used it to retrieve everything from arrows, to the bow I forgot to tie on. I used a slip sinker crimped to the saft of the trebble hook, and used duck decoy line. The decoy line is very strong, and because it's coated it doesn't get tangled up. The whole thing is wrapped up on a wooden bobbin and fits nicely in a pill bottle.
I never have to climb down again, in fact it's kinda fun to drop the hook down and snag something on the ground.
If you carry one of these in your pack, you'll never have to climb down again. (Unless you forget to tie your pack on)!