This is a specialty fly.  I wish I could tell you it works all the time. It simply doesn’t, however………

In the months from March to May, when the mornings are overcast, the blue wing olive mayflies are hatching, the fish are tail slapping the surface and you know they are taking emergers, then this is the fly you want. Don’t give up on your dry fly fishing just yet. This pattern will entice many of them to take an emerger and then grab your fly in the surface film. Tied in many colors and sizes I have chosen an early season dark BWO pattern in size 16 on a sprout hook.  Matching the size of the fly is more important than dialing in the perfect color.

Materials:

I use heavy or standard hooks size 16 to 20 with olive thread. The under body on larger flies can be thin sticky back foam for more buoyancy covered with dubbing, smaller flies use only olive dubbing. The tail is horse hair or natural turkey biot short fibers. The magic wing material comes from the foam sheets that line the inside of mail envelopes and are found in colors grey, white, and clear. A thicker foam works better in the riffles.

  • Tie a dubbing bump at the bend of the hook. 
  • Splay the tail fibers over the bump, tie in and dub over the top. Add more dubbing to finish the body.
  • Cut a wing foam strip 1/8th inch by 2 inches and secure with a few figure 8’s, then cover with light dubbing.
  • Use one or more post turns to secure the open wing shape.  
  • Dub a small black head and superglue the thread one inch to whip finish.
  • Cut the wings to shape.

This is my go-to fly pattern for BWO hatches. It outperforms all others.

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