Just finished Jim Gasque's '48 book "Hunting and Fishing in the Great Smokies" which had a chapter on Mark Cathy. Mark almost always used the same pattern when fishing in the Smokies and purportedly would always catch more fish than any other 3 fisherman on the same water on the same day. Why? 1) He knew exactly where the fish were and 2) His presentation was incredibly natural. Color didn't matter much to old Mark as long as it was a yellow body with gray hackle.