Very interesting thoughts, Rob. I wonder about the visibility issue about fluorocarbon line. The issue is the visibility of the line within one medium, the water (visibility to the fish), which maybe is not the same as the visibility of the line from the medium of air when the line is in the medium of water (visibility to the angler). Supposedly pure fluoro has a refractive index that is closest to the refractive index of water compared to any other line. Too bad lines do not come labeled with their refractive index so we can compare lines. Just a thought; maybe I am "all wet" on this one. Besides, there is always the angler's confidence factor to consider.

Bob