surgeons end loop

Surgeons End Loop
Loops are made for the purpose of attaching leaders, traces or other terminal tackle. They have the advantage that they can be tied quickly and in the dark.
The Surgeon's End Loop is an easy way to go.

1. Take the end of the line and double it to form a loop of the required size.
   
2. Tie an Overhand Knot at the desired point, leaving the loop open.
   
3. Bring the doubled line through the loop again.
   
4. Hold the line and the end part together, and pull the loop to form a knot.