Last night was the first time i'd ever fished opposite a bunch of people who were using isotopes, well basically the first time I've fished in darkness near anyone else. I'm a bit thick and for about an hour I was thinking "all these people have got green or red head torches...must be something to do with fish being put off by normal torches...".
The penny finally dropped after a while. I do fish into dark quite a lot, but till now I've just listened for the baitrunner and/or had the rod against a light patch of sky. Might give it a go though, would like to see a light show from fluourescent chub plucks.