Check out this instructional fishing HowTo video to learn how to tie a turtle knot. The Improved Turtle Knot is an easy knot that is quickly tied. It works well for hooks with downturned eyes but can be used for other hooks as well. The improved turtle knot retains around 80% of original line strength. It can be used with monofilament for attaching hooks, swivels, lures and flies. Reel in the big fish with this fishing tutorial video.