i have limited experience here, thankfully, but i will still throw a wrench in this discussion. who here has really used pickets, deadmans and icescrews, etc... and i mean really used them? taken falls on them?
what happens when you have no real anchor point? ok, maybe a deadmans buried, but that aint much. there is a ton of stress being placed on your system as you raise the fallen...
just another thing that the dhude standing on top will have to figure out.