Ok mono has lots of stretch, copolymer had no stretch. My question is how does flourocarbon compare to mono and copolymer?

Does flourocarbon stretch like mono?

Is there an advantage using flourocarbon over mono or copolymer?

the only line that doesn't stretch is braided line. even some braids have a low 3% stretch. the amount of stretch a line has is dependent on the brand. for example pline CXX is a copoly and has some of the most stretch a line could have but it's incredibly strong.  all fluorocarbons stretch as well. you can't really make a statement like "fluorocarbon stretches just as much as mono". you have to compare similar lines to actually get to that conclusion. for example, seaguar inviszX is a very stretchy line and people that have only used this could probably make that comparison to mono. however, a line like sunline shooter or seaguar tatsu doesn't have even half the amount of stretch as most monos. In general, fluorocarbon isn't as easy to handle as mono, it's more sensitive than mono, it sinks, it has light refraction qualities than make it less visible in water, you can feel bites much better on a slack line due to it's density. 

Here are some recommendation on the type on line you use.

 

Mono = Top water.  Mono float so it's best to use on Top Water.

          =  Rocky bottom or shore line.  Mono tend to not get cut up by sharp rocks.

          = Cranking/Jerking, or any treble hook lure.  Mono stretches and it will give you that extra rubber effect so your lure won't jump off.

 

Fluor  = Drop shot.  

          = Clear water fishing.  Fluorocarbons is invisible so it will be best use in clear water.  It also sink too.

          = Great for light presentation and jigging deep.

          = Single hook swim bait. 

          = Spinner bait

          = Spoon

 

Braid = Tainted/Muddy water plastic

         = Punching grass

         = Pig n Jig timber

 

I'm probably missing some stuff, but this may help you.

BigBill, many of the questions you have been posting are great questions, and there are great answers in the article section of this forum. 

I just looked now and there are over 10 articles addressing your concern. Look under "fishing gear" on the article section. I hope this will help you. Also there are good informative articles regarding the gear ratio thread you started.

There's no hard set rules, and standards for sublective things like stretch or springiness do not exist. All over this forum, there are threads addressing fluoro and applications.  The main advantage of fluoro to me is it's density.  It is both more sensitive and sinks better than mono or copolymer lines.  Some fluoro is stretchy, some is springy, others are stiff and more abrasion resistant.  All sink, and all are more sensitive than mono or copoly.  One warning, it is very unforgiving to sloppy knot tiers.

dont use fluoro for topwater...ever.

Francho and iabass said it very well. The density is what really separates FC from other lines. People far too often want to make conclusions on fluorocarbon based solely on how the line stretches. Increased sensitivity, wind resistance, refractive indexes, anti-bow properties and abrasion resistance all are at least partially in result to the increased density of fluorocarbon line. 

Francho and iabass said it very well. The density is what really separates FC from other lines. People far too often want to make conclusions on fluorocarbon based solely on how the line stretches. Increased sensitivity, wind resistance, refractive indexes, anti-bow properties and abrasion resistance all are at least partially in result to the increased density of fluorocarbon line. 

 

^^^ What he said... ^^^

dont use fluoro for topwater...ever.

I use 10lb fluoro on my 50E, usually small cranks, but I use Pop-R's at night with no issue.