I have heard that brook trout are particularly fond of the Royal Coachman, but that rainbows and browns may turn their nose at it. Since I am planning to fish for brookies this weekend in unfamiliar waters, it seems to be a likely choice. I will let you know how it goes.
This fly was tied on a Tiemco TMC 531 #14 hook. Wings are white turkey quill. Tail is pheasant. The body is two strands of peacock herl with red silk floss. And the hackle is coachman brown.