Nice tie. That's a blast from the past for me. I tied some up year's ago when it came up in discussion on the FF@ list. If I remember correctly it was designed to be fished in riffle water. First time I used one I caught two browns, 16 and 18 inches on the West Branch of the Delaware. Also learned not to forget my net and never lip a large trout to land one. It was a staple in my box for several years catching its share of browns, brookies and local sunfish. Then other patterns took its place in my fly box. I think I'll tie some new ones up over the winter, and see if it still works as well as it did the first time around. This is what my version looked like.