Montana Fly Co.'s Jig Duracell in Original with a copper bead is a #16 mayfly nymph tied on a jig hook for euro nymphing. The jig hook rides point-up, so it fishes clean along the bottom with fewer snags, and the copper bead gives the fly the weight to reach depth fast in runs and pocket water. An all-around jig nymph that works as a compact attractor, it covers the naturals trout encounter most often. Fish it dead-drifted on a tight line or under an indicator — a go-to jig nymph for trout water everywhere.