John Arnold has guided and tied commercially for 20+ years. He is a expert. He also owns and operated his own fly shop Head Hunters on the Missouri River in Craig Montana. His experiences on the flats in the winters have allowed him to hone in some of his patterns and this is a very good one. We have heard from other travel folks that say this fly is kept a secret by guides in the Bahamas and Xmas Island. You might try a few. Good for Bonefish, Permit, and anything that eats shrimp like looking things off the bottom.