I wouldn't mess with it for main line. The two fluorocarbon lines I have tried are Seagar and Vanish. The slight advantage of faster sinking , abrasion risistance and not losing stregth when water soaked aren't worth the stiffness of Seagar or the low knot strength of Vanish. I found the knot strength could be improved to the #test by lubricating the line with smelly jelly but find thats too much of a bother. The only time I mess with fluorocarbon is a last resort leader in clear water. Yo-zuri is a line I really like. It is a polymer line with a fluorocarbon layer on the outside.