I'm wondering how much more visible a fluorocarbon coated line is made by a coating of sediment from a lake.
When I changed the line on my reels, you could see and feel the sediment on the line, dry and powdery, with a whitish coating. In the water, obviously, it is not dry, but does it stick out on the line? Does it stick in between trips, or does it get washed off, then recoat it?
I tend to reel in between my fingers a few times, and give my line a coating of Greased Lightning every now and again, which I think reduces the sediment sticking for a while.