Rappelling is a ton of fun. But what if all you have is a rope and the knowledge of how to tie a bowline knot? Combine them together and, boom! There you go. How to quick rappel out of a tree using only a rope and a bowline knot. Of course you could use other knots as well, but would you really trust them? The bowline is the only one I would trust with my life! Don’t do this at home without training and supervision.