How to tie a Surgeon’s Knot & End Loop

The Surgeon’s End Loop forms a loop at the end of a line. This provides a means to quickly attach leaders and other tackle. This end loop is very easy to tie and very reliable, but it is slightly more bulky than the Perfection Loop.

This knot couldn’t be any simpler, it’s quick and reliable. However the loop formed is always slightly offset from the main line. No problem for bottom fishing, but for trolling with light tackle we would use either a Leader loop knot or a Perfection loop knot. For heavy leaders use alloy or copper crimping sleeve swaged with a quality swaging tool.

How to tie a Surgeon’s End Loop

  1. Turn the end of the line back alongside itself so that you have formed a loop.
  2. Grip the tag end and the main length in one hand and, with the thumb and forefinger of your free hand, take hold of both lengths short of the loop itself.
  3. Now make a loop with your thumb and fore finger and hold this new loop with the fingers of your other hand. Let go with your thumb and forefinger and use them to pass the first loop twice through the loop that you have just formed.
  4. Moisten the knot and pull both ends carefully to tighten it. Trim-off the tag end close to the knot. This knot has the advantage of a tag end that lies close to the main line.

Video Instructions

How to tie a Surgeon’s Knot

One of the quickest and strongest knots for joining leader material to line with unequal diameters. Some people get confused when looking at drawings of this simple knot because the drawings do not show the full leader length. Just remember to pass the end of the line and the whole leader through the loop twice. This Knot is used to attach tippet to the leader. It is widely used in freshwater trout fishing applications. Remember when using this knot that it will remain a strong knot if the step down in diameter does not exceed more than 30%. for instance, You can join a piece or 8lb. test(3x) with a piece of 6lb.test(4x). However you would not want something like 3x to 5x as the diameter difference is to great and will result in a very weak knot.

The Surgeon’s Knot is a knot also used for attaching two pieces of monofilament together. It is a very fast and easy knot to tie and is usually preferred more than the blood knot. This is a great knot for joining two pieces of monofilament that are greatly different in diameter. When you are building a tapered leader, tied correctly, this knot is generally stronger than the blood knot. Very quick and easy knot for attaching 4X-5X-6X-7X tippet to each other. You can do this one in the dark.

  1. The main line should come in from the left and the line to be attached should come from the right. Overlap the two pieces approximately 6 or so inches.
  2. Pinch the overlapped lines together on the left between your thumb and index finger. Do the same with the sections on the right and make a loop by crossing it over itself. Take the long and short lines that are in your right hand and pass them through the formed loop. around, and back through a second time.
  3. Pull both pieces being held in each hand away from each other closing the knot. Moisten and pull tight. Once this not is secure you can tighten it further by pulling individual pieces. I would not recommend this knot for line over 30lbs because it will be hard to tighten and the strength of the knot will only be there if tightened all the way.

The mono line should be moistened (water or spittle) before closing the knot to keep down friction heat that can weaken the line, also never tug on a knot too much to “test it”, it makes no sense put 10 pounds of strain on an 8 pound line!

Video Instructions

Knot Tying Terminology

  • Butt: The thick part of the leader. The butt of a leader is attached to the fishing line.
  • Tag or Tag End: The working end, the part of the line where the knot is tied.
  • Standing Part: The main part of the line that is fixed and under tension. Such as the part of line that is on the reel.
  • Standing End: The short area at the end of the standing part of the line.
  • Working End: The part of the line used actively in tying a knot. The opposite of the standing end.
  • End: A loop is a closed curved line, formed by bringing the tag end back and alongside the standing part, or a knot that creates a loop.
  • Tippet: The end of a leader to which the lure is attached. The tippet can be the end of a leader or an added line to the end of a leader.
  • Turns or Wraps: A turn or wrap is one complete revolution of line around another.
  • Overhand Knot: The foundation for many other knots. (A Granny Knot before it is pulled tight)