The Monkey’s Fist is a classic knot. It’s best used to tie in the leading end of a heaving line, adding weight to improve its flight and distance through the air.
To Tie a Monkey’s Fist :

Another really useful feature of the monkey’s fist knot is that the last loop can be easily pulled out and used as a cinching knot to place around a pier, or whatever you’re throwing the knot to.
For a more in-depth tutorial and additional information on the Monkey’s Fist knot, check out our video!