Quick and easy to tie, this loop will align as a perfectly straight extension of the leader, which is why many prefer it over the (arguably) easier-to-tie double surgeon’s loop, which is bulkier and not in-line.
1. Form a crossing loop.
2. Form a second crossing loop behind the first loop. The size of the second loop will determine the size of the finished knot. Pull the tag end straight down between the two loops.
3. Reach in and pull the back loop through the front loop.
4. Tighten by pulling the end of the loop and standing line in opposite directions. Put your finger inside the loop to pull it tight, use the rounded edges of forceps or pliers to seat it firmly. Trim the tag.
There you have it! Because it is slim and straight, the Perfection Loop is ideal for use at the butt end of your leader, enabling quick and convenient leader changes.
Joe Mahler is one of the USA's leading fly casting instructors and author and illustrator of “Essential Knots & Rigs for Trout” and “Essential Knots & Rigs for Salt Water”. You can Book a fly casting lesson with Joe via his website here .