Simple Monkey Fist Jig
Wrapping the cord your fingers is an easy way to make a monkey fist. The drawback is that there is a lot of excess cordage that slows the tightening process
I prefer to use a simple bit of coat hanger wire bent to accommodate the core you are using
I am using the "Royal Navy" monkey fist method for this instructable
https://www.instructables.com/id/Royal-Navy-Monkey-Fist/
Wrap the cord around the jig and core
Make second set of passes
Start third set of passes
Remove the jug and complete the passes for the final wrap