I've done some testing with UV and I kow it's benafits. I just don't think it was the UV that caught those fish. From the discription you gave it could have been multiple things. I do like the looks of the yarn and can see where it would have a great benafit.

I disagree that fish don't see regular color any different than flouresent colors. I think we can all aggree flourescent green (chartruse) works much better in low light and dark/dirty water. They see it different because the light penatrates the water different. Another example is red and flourescent red (rocket red) I find rocket red corkies to catch way more fish than red. They see it different. I've done some reading on this subject and it's very intresting stuff to learn what fish do see. One book comes to mind I think the name of it is "The Master Angler".

I wouldn't mind playinmg around with some UV yarn. I wounder how it would look if I washed it in some UV killer that I use on my hunting clothes and then fish with it.

Kris