Know your knots! With this free video tutorial, you'll learn how to tie a reef fishing knot. Tying a reef knot is similar to tying a square knot, and it can be tied on any type of 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.