This explicit synthetic fly is designed to mimic a small aquatic insect nymph, particularly using a closely weighted, streamlined profile. The intent is to shortly sink via the water column and current the imitation to fish feeding close to the underside in fast-flowing currents. This design typically contains a clean, epoxy or resin coating over a physique constructed with supplies like peacock herl, artificial dubbing, and tungsten beads for weight.
Its effectiveness stems from its capacity to quickly attain the strike zone the place trout and different fish typically forage. The slender silhouette and dense building contribute to diminished drag, permitting for a extra pure drift presentation. This design is particularly helpful in difficult fishing situations, corresponding to excessive water, quick currents, or when fish are holding deep. Its reputation has grown resulting from its confirmed success in numerous fishing eventualities.