Line Visibility

[dorf]

Everyone is talking about what the fish “see”. What about what the fish “feel”?
Don’t you think that a larger diameter line would cause more disturbance in the water that the fish would stay away. Halibuts might shy away from larger line not because they see the line but feel the disturbance in the water of the larger line. And what about your connecting not you are using to connect flouro leader on Spectra line or on your hook, jig or sinker? If it’s a big knot it will cause a different type of aquatic disturbance that might keep the fish away. The difference in line can cause a different disturbance also. When you look closely at flouro it is smooth compared to the coarseness of a breaded line.
I am by no means an expert. I use 65lbs spectra with a 25lbs flouro when hunting the big guys. I also use 12 and 15 pound mono for smaller guys in the harbor. These thoughts came to me when reading your posts. What do you think?