Know your knots! With this free video tutorial, you'll learn how to tie a perfection loop fisherman's knot. To tie a perfection loop fishing knot, you're basically going to put an overhand knot into your fishing line. The knot is easy to tie provided, of course, you know how to go about making it. For an easy-to-follow, step-by-step overview of how to tie this useful fisherman's knot in a minute's time or less, watch this free video knot tyer's guide.