Is it required to build an anchor/use deadman? from what I've read a deadman/cairn anchor needs to be used for the second to last rap, and that the sand/rocks that need to be used could be washed down with a big flow and there could be a scarcity of stuff to use to build the anchor. I read in the beta base that a group had to ferry rocks down from the previous rap to build the cairn anchor? Just curious to what other methods have been used. I'm planning on doing this canyon next weekend. Also wondering about water conditions if anyone has been through this canyon recently.