Tying a leader onto a fly line is an essential skill for any fly fisher. A leader is a length of thin, strong line that is attached to the end of the fly line and to which the fly is tied. The leader serves several important purposes: it helps to turn over the fly, it protects the fly line from being damaged by the fly, and it helps to keep the fly from sinking too quickly. There are many different ways to tie a leader onto a fly line, but the most common method is the clinch knot.
To tie a clinch knot, first pass the end of the leader through the eye of the fly line. Then, wrap the end of the leader around the standing line five or six times. Next, pass the end of the leader back through the loop that you created in step one. Finally, pull on the standing line and the end of the leader to tighten the knot. Trim the excess leader material, and you’re ready to fish!