Description
Ref’s ISO Emerger, designed by Mike Bachkosky, is a highly effective fly for imitating the emerging Iso mayfly nymphs. Created to replicate the critical stage of Iso nymphs transitioning to their adult form, this fly features a delicate, translucent body and a well-balanced presentation. Bachkosky's design was developed to fish effectively during the Iso hatch, particularly when the nymphs are just breaking the surface or emerging beneath it.
Pro Tip
Under the Surface Tactic: When fish are targeting emergers rather than duns, cast the Ref’s ISO Emerger slightly upstream and allow it to drift just under the surface. A slow, controlled retrieve can make the fly mimic an Iso nymph that is struggling to break free from its exoskeleton, enticing strikes from fish looking for easy prey
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Recipe
Hook: Tiemco TMC 2487 or equivalent, size 14-18 Thread: Olive 8/0 or 70 Denier Tail: Thin strands of olive or light brown microfibre Body: Olive dubbing with a slight tan or yellow tint, wrapped thinly to create a delicate profile Wing: CDC feather tied on top to create a subtle, upright wing indicative of an emerging nymph Hackle: Lightly tied grizzly hackle around the body for the right amount of buoyancy Thorax: Slightly darker olive dubbing or a blend of natural materials to represent the nymph's thoracic region