Line selection is one of the most important choices an angler has to make; it is also one of the most difficult. There are four types of lines available to anglers today; monofilament (mono), copolymer, fluorocarbon (fluoro), and braided/fused lines. In this article I am going to go explain the different types of lines on the market and tell you how to choose the correct line for each application.
Monofilament is the oldest line on the market; DuPont produced the first monofilament fishing line back in 1938. Monofilament fishing line is made from a single strand of nylon fiber. This single strand is very strong and abrasion resistant, but also extremely stretchy. Monofilament has its drawbacks, number one being the stretch, many anglers want a line that does not stretch six inches to a foot on the hook-set. However, the stretch can also be an advantage. On fast moving baits, crankbaits, spinnerbaits, and chatterbaits to name a few, anglers want the extra stretch in the line to allow the fish to take the bait in deeper before the hooks take hold. Monofilament line also has one more important characteristic, the ability to float. Floating lines are important when fishing topwater, nearly every angler you talk to will tell you he/she uses heavy mono line for topwater fishing. Having a line that floats on the surface will allow the bait to lay flat on the surface; if you were to use a sinking line, the nose of the bait will point down in the water causing it to lose its important action. Having a floating line when using topwater is important, but for virtually all other applications the floatability will have a negative effect. The single most important lure you do not want to use monofilimant line with is the deep diving crankbait, the floating line will pull the bait up causing the bait to run shallow.
Copolymer is a newer line, it came onto the market fairly recently. Copolymer was developed to be more abrasion resistant, have increased knot strength, and to have a thinner diameter. Copolymer is the second most abrasion resistant line on the market, behind braided. Copolymer line excels when fished around structure but can also be used in many other situations. Copolymer also has another great characteristic, the knot strength. Copolymer is very slick on the outer coating which allows knots to tighten without damaging the line. Copolymer has many great features, but the single most important is that unlike monofilament, copolymer does not float so it cannot be used for topwater. However, copolymer can be used for every other situation. Due to the ability to sink, copolymer can be used for deep diving crankbaits whereas mono cannot. Using a combination of monofilament and copolymer lines an angler can fish every type of situation imaginable at little cost.
Fluorocarbon is the newest line on the market. It seems like every time you turn on the television you see a professional angler talking about the use of fluorocarbon fishing line; this is due to the unique characteristic that only fluorocarbon has, the ability to disappear underwater. Many lines claim to disappear underwater, but the only line that is able to truly disappear is fluorocarbon. Due to this unique ability, fluorocarbon is by far the best choice of line when fishing clear to partially stained water. Having a line that is virtually invisible underwater will certainly increase fish strikes. There are a few drawbacks to using fluorocarbon that anglers need to be warned about, number one being the durability. Fluorocarbon line has a terrible reputation when it comes to breakage, when fluorocarbon lines get scraped against rocks or wood they will develop a weak spot. This weak spot will break under little pressure with fluorocarbon line. However, with most of the newer fluorocarbon lines the poor durability has been resolved. The second drawback to using fluorocarbon is the tendency to sink; like copolymer, fluorocarbon cannot be used for topwater due to the tendency to sink. Due to the ability to sink, many anglers fish deep diving crankbaits exclusively with fluorocarbon line. Fluorocarbon can be used as a direct replacement for copolymer lines.