The Hacklestacker. A creation of Bob Quigley. An innovative fly tier who is unfortunately no longer with us. Over time I’ve learned that his creations such as the Hacklestacker, Quigley Cripple, Film Critic and other patterns, can fool some very picky (selective) flat water trout. Here are some PMD and BWO Stackers all tied on size 18 hooks; with size 18 or size 16 hackle.