Claude led the way.

Recipe:

Hook: Hanak 130BL #14-20

Thread: 8/0-16/0 Black

Tail: Nothing or Pearl Crystal Flash

Body: CDC or Possum Fur or any other fine dubbing you have

Wing: 4-6  CDC feathers

Details:

The F Fly is one of the simplest and deadliest fly patterns. It is a Great all round Trout  fly pattern. Tied in a range of sizes and colours it imitates a range of  insects the CDC wing silhouette can be used to represent many caddis, olives and midge species.

The F fly is very effective in both rivers and still waters.