Andy Burk, a central sierran flyfishing guide, designed this fly originally for smallmouth bass. Yet, it has also been very effective for a number of other species including largemouth, steelhead, rainbow trout, cutthroat trout, brown trout, brook trout, salmon and even panfish. The pattern is basically a composite of a Nymph and Marabou Streamer with Rubberlegs thrown in. It could represent a damsel nymph, a stonefly, a minnow, or a crawdad. Lot's of action, a pure attractor streamer. Some have even adapted the pattern to be articulated. To fish the Aggravator in fast moving water an angler can either dead drift the fly through a fishy looking run or riffle or strip it actively against the current to try and get a reaction strike. In stillwater, a sinking fly line will get the fly to the big fish while the waving marabou tail and wiggly silicone legs should put any fish in the vicinity into a feeding frenzy. Andy has tied these in variations of black, olive and Prince Nymph.