Tippet Glow
Joe Kissane (Drag-Free Drift, 2001, Stackpole Books) recently sent me a great photo, shot by his brother Mike, illustrating the not so invisible nature of fluorocarbon. Mike is a professional photographer and eco-tour guide in Iceland—see here— (the land of huge brown trout, by the way).
Joe likes fluorocarbon because of its long shelf life, and the fact that it sinks. But, as he noted in his email, it is not “invisible.” All leader materials transmit light along their length, which can potentially give them a bit of a glow underwater, depending upon incident light angle, time of day, and water surface roughness.