Quote by: Mike

I have know idea Dave just personal observations over the course of 40 years of fly fishing for trout...same as Jungle Cock cheeks ...one with JC out fishes a mickey finn without them ...:wtf: wish I had an answer for yah but thats all I got

 Ah I think maybe the fish key on something . I know I might be crazy but when I fish my CDC emerger and the tail gets torn off I notice the fly isn't as effective.  The fly only has 3 small wood duck tail fibers but if they get torn off the fly doesn't catch near the fish if it has them .  The red wool to me is a key point that fish like as the Jungle Cock cheeks .