Originally Posted by OneThing
I agree with Mr. Sawyer here. The klemheist will hold on some of the slipperiest of ropes. Some times, you have to add a few extra wraps, but if all you have out on the trail is the same rope, then the Klemheist is my go to knot.
I like this knot as well. I have had issues with it locking up though. Usually when its wet. As long as a prusik is wrapped on a larger diameter line it works fine. One solution I learned from my old hennesey setup. It really assisted a prusiks hold and reducing its potential to lock. After you wrap the line if you wrap the tail of the prusik through the stationary end of the prusik it creates a sort of hitch that keeps the wraps taught on the line.