Fluorocarbon stretch, some have a little and some have a lot. Along with spool memory, we learn to live with it.  I noticed the first time I used fluoro that after pulling on a snagged jig, the stretch and the coils were gone. Evidently, unlike mono, it doesn't spring back.  I'm sure others are well aware of this, but anyone intentionally stretch their fluoro to remove its stretch, or would that weaken the line?

When any plastic is loaded behind it’s yield strength and yield permanently it’s weakened. The simple reason is the diameter is reduced along tensile properties. For this reason FC line should be changed when stretched beyond strength or over 35% of it’s ultimate strength.

Most bass anglers tend to use line far stronger then needed to 3 lb to 5 lb bass!

I use 12 lb line to catch hundreds of bass over 12 lbs.

Tom      

I would agree with Tom on this one. While you can stretch nylon mono and eliminate some stretch and actually strengthen the line slightly, fluorocarbon appears to have a lower yield point, and as such, prestretching is probably a bad idea.

I like to stretch my line with a big bass on the other end.  ?

You’re right, some stretch more than others, that’s why I stopped using InvisX and only use Sunline’s product line. 
But all 100% flouro will stretch to some degree and none will recover. 
 

But to purposely stretch it will weaken the line as stated above. 
 

 

 

 

Mike

2 hours ago, gunsinger said:

I like to stretch my line with a big bass on the other end.  ?

Thats the only way I want to stretch my flouro, I like to run it off in the back yard and reel back in without a lure thru a tiny piece of cloth wet with KVD conditioner. Used to change it out every year but now go 2 seasons no problems. Different FC from different manufactures all act differently so I stay with one brand and specific type, it seems to have less stretch and memory than some other types of even the same brand.

As noted above by some seriously good sticks, 

it has been my experience that FC does not respond well to being heavily stressed,

in particular, being stretched; especially repeatedly.

I like FC  but have learned to 'Use it' with much less failure. 

And while FC may not deteriorate under normal use like mono, it does NOT appear to be as durable when pushed, during the same time frame.

 So, like mono, I change it more often than most, perhaps not quite as much but it happens. 

IF I never got snagged, never got over runs, never fished in abrasive cover and never caught fish that stressed the line, I'd not change it that often.  However these things do happen

(I like the last part best) so I feel there's a need.

I am NOT Fan of the Mystery break offs, which I feel line stress may contribute to. 

Fish Hard

A-Jay

 

14 hours ago, papajoe222 said:

Fluorocarbon stretch, some have a little and some have a lot. Along with spool memory, we learn to live with it.  I noticed the first time I used fluoro that after pulling on a snagged jig, the stretch and the coils were gone. Evidently, unlike mono, it doesn't spring back.  I'm sure others are well aware of this, but anyone intentionally stretch their fluoro to remove its stretch, or would that weaken the line?

That will weaken the line. I do stretch mono to remove the slinky sometimes though.

I believe the lack of elasticity of fluoro is what is commonly misinterpreted as “low stretch “. Your observations are spot on.