The Nail Knot is one of the most common fishing knots used to tie leader on to a fly line. It is also hard to get if you are just looking at pictures of it. This video very clearly demonstrates the correct way to tie a Nail Knot. So no more blaming the knot when you blow a fish off the end of your fly line!
Improved Clinch Knot
The Improved Clinch Knot is one that I can do literally with my eyes closed. Which is good because there are many