Just flicking through this thread and remembered I'd seen an article recently in Anglers Mail about red line and its apparent qualities see below ..........................................
A lesson in red line colour--
Comments about red line invisibility lead me to clear up the myth once and for all.
White light contains a mixture of all colours of the spectrum from red through to blues and violets.As light passes through water,light energy is absorbed as it passes through the water column.
This absorption spectrum of water (red light absorbs 100 times more than blue light),together with the five times greater scattering of blue light over red light,contributes to the blue colour of lake,river and ocean waters.
As red light is the first part of the spectrum to be absorbed,red line(or indeed any red object)cannot reflect back red light.
This does not make it invisible - it would in fact appear black against a lit background - making it the most visible.
Trust me I,m a physics teacher!!!
Christian Barker,Ipswich.
Maybe this is why red baits are so succesful, maggots boilies etc, as they appear black against their surroundings??? Fish also seem to like black baits from hemp through to black bits of zigged up foam etc so the next question for investigation should be - Whats best - black or red bait??[

][B)] Hope this helps you out [:T]