Fluoro-coated line is a copolymer line with a fluorocarbon outer coating that offers low visibility and easier casting but has less sensitivity and abrasion resistance.

So, in the end, what is copolymer fishing line? It's a strong, low-visibility, cost-effective line that will let you cast longer distances and work with the knots you already know how to use. And chances are, it's the right line for you.

Fluorocarbon is made from vinylidene fluoride resin and is extruded into a single strand. Fluorocarbon is made in a similar way to traditional nylon(monofilament) lines. If you would like to learn more about the history of fluorocarbon and fishing lines, this article has a detailed history to read.

Co-polymer is stronger than fluorocarbon for its given diameter and is a lot more supple. This makes co-polymer far more suitable to fishing dries and nymphs close to the surface.

Fluorocarbon coated line gives me all I need with low under water visibility, high above water visibility, good handling, and sufficient sensitivity, abrasion resistance, toughness and knot strength for what I do.

Sensitivity - Fluoro's tightly packed molecules transmit more energy than mono, better telegraphing information from the other end of the line, such as light bites or your lure ticking bottom. Also boosting sensitivity, fluoro sinks faster than mono, resulting in less slack or bow between the lure and rodtip.

Co-polymer is stronger than fluorocarbon for its given diameter and is a lot more supple. This makes co-polymer far more suitable to fishing dries and nymphs close to the surface.

Copolymerization offers flexibility with respect to possible monomers and a great diversity of polymeric products, but also composition drift, which may need to be minimized or exploited in a controlled way, for specific structure–property relationships.

Copolymer line is made of two different nylon polymers, while monofilament line consists of just one type of nylon.

When buying line you should check to see if the product is 100 percent fluorocarbon or a fluorocarbon-coated version. Fluoro-coated line is a copolymer line with a fluorocarbon outer coating that offers low visibility and easier casting but has less sensitivity and abrasion resistance.

The drawbacks of fluorocarbon can be summed up in a single word: inflexible. This is essentially a hard line which is what makes it water and abrasion resistant.

Best Fluorocarbon Fishing Line: Reviews and Recommendations

• Best Overall: Seaguar Tatsu.
• Best on a Budget: Trilene Professional Grade Fluorocarbon.
• Best for Bass Fishing: Seaguar AbrazX.
• Best for Saltwater Fishing: Seaguar InvizX.
• Fluorocarbon is Nearly Invisible Underwater.
• Fluorocarbon Sinks, Other Lines Float.