Prusik knots are difficult to push up a rope, but there is a simple improvement you can do using a carabiner: https://www.google.com/search?&q=bachmann+hitch&tb

Prusik knots are difficult to push up a rope, but there is a simple improvement you can do using a carabiner: https://www.google.com/search?&q=bachmann+hitch&tbm=isch https://www.google.com/search?&q=bachmann+hitch&tbm=isch