Surgeons End Loop

Fly fishing requires knowledge about three basic types of knots: line-to-line knots, which join lines of varying strength; terminal knots, which joins hooks and lures to your fishing line, and loop knots, which secure the lures. A fishing line is available in many different material types, but the two most popular lines are monofilament and braid. Loop knots are tied with an open loop end, where a line can be tied at the end of it to make a connecting system. One of the stronger loop knots is the ‘Surgeons End Loop.’ Tying a Surgeons End Loop is very similar to tying a Surgeon’s Knot. However, the Surgeons End Loop is used to loop a line back on itself, creating a stronger loop to affix many different lures and fishing tackles.
Step 1:
Hold the line and double it up.

Step 2:
Tie a loose over-hand knot.

Step 3:
Pass the loop end of the line through the knot again.

Step 4:
Hold the tag end with the loop to tighten the knot and pull. As a simple trick to get a tight pull, fishermen moisten the line. Clip and trim excess line.

Our Take:

Surgeons end loops are popular because of their 100% strength hold. This loop is used by freshwater fly anglers and has also become a favorite with saltwater fishermen. The premise in using this type of fishing loop, is to serve as a loop to loop connection. Using loops makes it possible to change leaders in seconds. With a strong, dependable loop connection, you are not awkwardly working with a knot that is binding when you have a tippet that is attached to a leader, when a leader attaches to a fly line or when a fly line is attached to your backing. You need a strong non-slip surgeons end loop for each piece of fishing equipment to be joined together by interlocking the loops.
Joshua Keaton
Joshua Keaton

Joshua is our senior staff writer for and He is an avid hunter, clay shooter and amateur photographer.