17 Best Fluorocarbon Leader Lines in 2022 | By Captain Cody May 21, 2022 · Seaguar Blue Label fluorocarbon is one of the most most popular fluorocarbon leaders. This is a double structure fluorocarbon that uses two fluorocarbon resins that make the line in a co-extrusion process. This line is low-visibility, abrasion resistant, has a high knot strength, and is fast sinking. This line comes in 25, 50, and 100 yards spools.