Uses: The Slim Beauty Knot is an excellent knot for joining different diameters and different materials. As shown in the animation, it is useful when tying a large Tippet to the Main Line. Tarpon fishermen use it because it is strong and easy to tie and many people use it as a more convenient alternative to a Bimini Twist.
Origin: The Slim Beauty Knot is attributed partly to Tom Pierce who initiated the development while working as a light-tackle guide in Key West during the 1970’s. It was further refined by Simon Becker in the early 1990’s for use in tying Tarpon Leaders. See his review in Midcurrent. Having read his account about how the knot was first named, I might be tempted to use it just so I could retell his story.
Breaking Strain: Many writers claim that it tests at close to 100% of the line’s breaking strain. However, these claims compare their results to the line’s rated strength, e.g., 30lb line, rather than to line tests performed in the same environment with appropriate test equipment. If anyone has performed such comparisons please send me the data.
Tying it: The recommended number of turns used for the Slim Beauty Knot varies. Simon Becker describes using as few as three turns outwards and two turns coming back in. Other writers describe using up to about ten turns in each direction.
Advantages: The Slim Beauty Knot is used to join braided to mono as well as small diameters to large diameters. It is a versatile knot which is relatively easy to learn and remember. It is also compact and straight when completed.