The Uni knot, also known as the Grinner, is used to attach hooks, rings, and swivels to fishing lines. It works well with monofilament, co-polymer, and fluorocarbon lines.
How to tie
Feed the line through the eye of the hook and hold the line parallel with the main line.
Create a loop over the doubled line.
Wrap the tail end round the line and through the loop 6 times.
Wet the line with water or saliva and pull the tail to begin tightening the knot.
Slide the knot down by pulling on the main line.
Pull tail again and continue to alternate until you reach the eye of the hook.
One last pull on the mainline to tighten it.
Cut off the tail end to finish.