Fishing line myths
Posted: Sat Oct 17, 2026 5:19 pm
Some obvious myths about fishing line that are easily disproven:
1. Braid doesn't stretch. Fluorocarbon doesn't stretch. Yes, they do and it is easy to run experiments yourself to verify.
https://www.google.com/search?q=how+muc ... b&ie=UTF-8
This is how you can test it yourself: https://www.bassresource.com/bass-fishi ... ated-2016/
2. Fluorocarbon is invisible to fish. No, it is less visible than mono but not invisible. You can readily test this out with some line and a glass of water, it is that easy.
Similar for claims that a particular color makes the line invisible to fish.
3. Some knots break at over 100% of line strength. It is very easy to tie knots and pull to break to disprove this. Almost all of the time the knot will break, even with a very good knot.
4. Fluorocarbon line is inherently much more sensitive than mono. The perceived difference in sensitivity with weightless plastics is because fluorocarbon is denser and sinks faster with less bow in the line. If you really want higher sensitivity, then use braid to a leader (both same pound test). The sink rate of fluorocarbon only seems important with weightless plastics (e.g. Senkos).
5. Fluorocarbon sinks, mono floats. They both sink once they break through the surface tension of water. Fluorocarbon sinks faster due to its higher specific density. Again, an easy test that can be done with a glass of water. Fly fishermen still have to apply fly dope to mono leaders to increase surface tension to keep it from sinking.
6. My line broke because this brand of line is bad. Unlikely. If the end of the line is curled (assuming fluorocarbon or mono), then the knot slipped and that is probably because you tied a poor knot or did not tighten it correctly. If the line is rough at the end, then it got frayed rubbing against the fish, rocks or other objects and broke at the weak spot. Once in a while, a knot will break and the line won't be curled (seen this in my tests of knot strength).
7. Line test is the pound force where the line will break. Almost all line (except IGFA) breaks above the stated line test, some significantly so. Line that is claimed to be really strong is often just larger diameter and thus much stronger than the rating. IGFA rated line is guaranteed to break at less than the stated line test.
There are a lot of line myths out there, many of which are claims from sales weasels. Be wary of any claims that lack data, especially real world data rather than someone's armchair argument. Fishermen seem especially gullible to sales pitches, especially after a slow day on the water.
https://flyguys.net/fishing-information ... arbon-myth
https://www.ibm.com/think/insights/in-g ... bring-data
Any other line myths? Or even other fishing myths?
1. Braid doesn't stretch. Fluorocarbon doesn't stretch. Yes, they do and it is easy to run experiments yourself to verify.
https://www.google.com/search?q=how+muc ... b&ie=UTF-8
This is how you can test it yourself: https://www.bassresource.com/bass-fishi ... ated-2016/
2. Fluorocarbon is invisible to fish. No, it is less visible than mono but not invisible. You can readily test this out with some line and a glass of water, it is that easy.
Similar for claims that a particular color makes the line invisible to fish.
3. Some knots break at over 100% of line strength. It is very easy to tie knots and pull to break to disprove this. Almost all of the time the knot will break, even with a very good knot.
4. Fluorocarbon line is inherently much more sensitive than mono. The perceived difference in sensitivity with weightless plastics is because fluorocarbon is denser and sinks faster with less bow in the line. If you really want higher sensitivity, then use braid to a leader (both same pound test). The sink rate of fluorocarbon only seems important with weightless plastics (e.g. Senkos).
5. Fluorocarbon sinks, mono floats. They both sink once they break through the surface tension of water. Fluorocarbon sinks faster due to its higher specific density. Again, an easy test that can be done with a glass of water. Fly fishermen still have to apply fly dope to mono leaders to increase surface tension to keep it from sinking.
6. My line broke because this brand of line is bad. Unlikely. If the end of the line is curled (assuming fluorocarbon or mono), then the knot slipped and that is probably because you tied a poor knot or did not tighten it correctly. If the line is rough at the end, then it got frayed rubbing against the fish, rocks or other objects and broke at the weak spot. Once in a while, a knot will break and the line won't be curled (seen this in my tests of knot strength).
7. Line test is the pound force where the line will break. Almost all line (except IGFA) breaks above the stated line test, some significantly so. Line that is claimed to be really strong is often just larger diameter and thus much stronger than the rating. IGFA rated line is guaranteed to break at less than the stated line test.
There are a lot of line myths out there, many of which are claims from sales weasels. Be wary of any claims that lack data, especially real world data rather than someone's armchair argument. Fishermen seem especially gullible to sales pitches, especially after a slow day on the water.
https://flyguys.net/fishing-information ... arbon-myth
https://www.ibm.com/think/insights/in-g ... bring-data
Any other line myths? Or even other fishing myths?