I am brand new to this board, and only have a year under my belt as a paddler, but I am not new to climbing, diving, canyoneering, and rope rescue. I am a professor and free-lance photographer.
There is lots of wisdom and experience here, but I have two points that may be helpful.
Polypropylene/ dyneema throw bag concern.
Last year while working on a photo gig, I was able to save a $400 paddle for a fellow by rappelling down a 15'-20' boulder to a small landing next to a eddie on the Chatooga river. There really was no way for him to get to it. I was rappelling with what I had- 3/8" dyneema/ polypropylene rescue line. No big deal, right? I went slow, even still, the friction melted through the polypropylene, leaving nothing but the spectra core, which can't hold a not. Under different circumstances, I could have been screwed! From now on, I carry the little Astral dyneema throw bag on my pfd, and I carry 80' of NFPA 3/8" grabline, nylon core, in my bottle holder. Not as strong, but I know I can knot the core if the sheath melts! If a prusik burns through polypropylene, a prusik can grab that nylon core too.
As you probably know, the little Astral bag isn't much good for throws from the bank- you run out of rope real quick.
As a cave/ wreck diver, I learned to carry 2 knives: a quick access blunt tip. I have had to cut away from line more than once. If line is wrapped around you, the best way is to saw away from you, tip towards you. I can saw out of an entrapment by repeatedly stabbing myself with a blunt tip! Sometimes you need to stab something (raft, BC bladder, etc...) that is why I carry a small locking folder in a pocket. Mine is a cheap Leatherman ($1
, but I really want one of those Benchmade Griptilians.
I hope this adds to the discussion.