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Elk Hair Caddis Fly History and Techniques

Aug 23, 2025

Overview

This episode of "Untangled" focuses on the history, versatility, and advanced fishing techniques for the Elk Hair Caddis fly, along with listener Q&A on seasonal trout behavior, fly box simplification, and detecting subtle bites.

The History of the Elk Hair Caddis

  • Invented by Al Troth in 1957 on Loyal Sock Creek, Pennsylvania, originally meant to imitate emerging caddis as a wet fly.
  • Discovery that the elk hair wing made it float led to its popularity as an effective dry fly.
  • Gained widespread fame through Bud Lilly’s fly shop in Montana and a 1978 Fly Fisherman magazine article.
  • Al Troth also created other well-known flies like the Gulper Special for Hebgen Lake’s trout.
  • Troth moved to Montana, became a well-respected guide/outfitter, and remained influential until his passing in 2012.

Versatility and Techniques for the Elk Hair Caddis

  • Functions as both a dry fly and an emerger without modifications.
  • Can be fished by dead drifting, sinking with split shot, swinging through pools, or skittering on the surface.
  • Movement during a swing or a twitch mimics natural caddis behavior, often triggering strikes.
  • Adding a heavy nymph as a dropper allows for “bouncing” to mimic egg-laying caddis.
  • Used effectively as a searching pattern, especially from June to October across trout waters.

Listener Q&A: Trout Behavior in Warm Water (Philip, Nevada)

  • Trout migrate to cooler upper river stretches or deeper pools as lower elevations warm in late spring/summer.
  • Optimal trout water temps: high 40s–low 60s °F; smallmouth bass thrive when water exceeds 69 °F.
  • Trout likely inaccessible in the warm season; suggested to fish higher elevations or target smallmouth bass instead.

Listener Q&A: Downsizing Fly Boxes (Ray, Alberta)

  • Most fish are caught on a core set of 15–20 patterns; unnecessary to carry all boxes every trip.
  • Organizing boxes by fly type/season makes it easier to bring just what’s needed for the day.
  • Creating a dedicated “day trip” box with essential flies simplifies packing and improves enjoyment.
  • Adjust selection based on season and target water to avoid over-preparing.

Listener Q&A: Detecting Subtle Bites (Christopher, Arizona)

  • Watch for any unnatural movement (pause, hesitation) of indicator or dry fly as a sign of a bite.
  • In clear water, observe fish movement/mouth open-close as an additional cue.
  • Tight line nymphing or closely monitoring the indicator increases catch rates for subtle takes.

Live Real Life Moment

  • Listener Tommy shares a memorable catch after adapting techniques and setting the hook on a subtle indicator wiggle.
  • Reinforces importance of attentiveness to subtle strike indications during fishing.