The Intruder needs no introduction. From its conception years ago to present, the pattern has countless variations. My Intruder is tied with my favorite materials and constructed to be durable and swim like a living creature. I prefer the pattern to be tied with a twin tail of ostrich and long jungle cock eyes on the flank of the twin tails. The jungle cock swim very nice and potentially put the focus of attack on the back of the fly, improving the quality of the hook set location in the fish's mouth.