Pro Knot Knot Guide Cards. Outdoor Boating and Paddling Knot cards are the same 17 best rope knots on 6 cards. Packaging differentiates them for different markets. Fisherman's Knot Guide is a 3 card set featuring illustrations of the 10 most popular knots that folds out to a 12" ruler. Waterproof. Package Contents: Pro Knot Knot Guide Cards The Pro Knot Knot Guide Cards is a quality addition to the Pro Knot lineup. For more great deals on Fishing Gear by Pro Knot please browse our Pro Knot Fishing Gear page.