Comparing Knot Strength Using UniODA
Paul R. Yarnold, Ph.D. and Gordon C. Brofft, BS
Optimal Data Analysis, LLC and Marine and Water Consultant
This study assessed comparative strength of three versatile knots widely used in big-game fishing. Experiment One compared Uni and San Diego knots tied in 30-, 40- and 50-pound-test monofilament line (the modal strengths), finding no statistically significant differences in knot strength. Experiment Two attached 40-pound-test monofilament line to 50- and 65-pound-test solid spectra, and to 60-pound-test hollow spectra line using a
Double Uni knot, and found the 40-to-65 connection was strongest. High levels of variation in knot strength which were observed raises concern about the durability and consistency of monofilament line.