It ain’t easy but then most good things aren’t, and Capt. Bryan Dietz’s PR bobbin knot is good. It’s very good: It was the top knot in Sport Fishing‘s fourth reader knot challenge (in 2017), breaking at 100 percent of the main line’s strength when connecting light braid to fluoro leader, and 99.5 percent when connecting heavy braid to fluoro leader. In this video, Dietz shows exactly how it’s done.
Below is an animated video showing each step of tying this knot.