Found this fly while poking around the flyboxes at Kingfisher's in Missoula (nice shop, love their rolling material racks). S'posed to be a good bet on Rock Creek; turns out it was.
hook - Mustad 9671 #12
thread - Uni 8/0 camel
Tail - goose biots brown
body - Super Floss red
rib - peacock herl
hackle - Indian hen back
head - 1/8 brass bead
Mash down barb and slide bead on shank
http://i80.photobucket.com/albums/j1...n/IMG_1247.jpg
start thread, wind to bend and create thread ball
http://i80.photobucket.com/albums/j1...n/IMG_1249.jpg
tie in biot tails (extend a little less than shank length) tight against thread ball to divide; trim tails and create thread underbody
http://i80.photobucket.com/albums/j1...n/IMG_1253.jpg
tie in Super Floss (original pattern called for regular floss but it tends to darken up too much for my liking when coated in cement; Uni-Stretch is better and easy to work with but I wanted to see how the spandex stuff would work)
http://i80.photobucket.com/albums/j1...n/IMG_1256.jpg
tie in peacock herl
http://i80.photobucket.com/albums/j1...n/IMG_1258.jpg
wrap Super Floss, try to create tapered body
http://i80.photobucket.com/albums/j1...n/IMG_1263.jpg
coat with Sally
http://i80.photobucket.com/albums/j1...n/IMG_1264.jpg
spiral peacock up body while cement is still wet (to tell the truth, counter wrapping with x-small copper wire would probably create a more durable fly; next time)
http://i80.photobucket.com/albums/j1...n/IMG_1266.jpg
prep a hen back feather; couple wraps of hackle (keeping it sparse), tie off, a bit more Sally and you're done
http://i80.photobucket.com/albums/j1...n/IMG_1271.jpg
top view (kinda)
http://i80.photobucket.com/albums/j1...n/IMG_1273.jpg
If it's going to be fished (and lost) amongst the rocks, I like to keep them simple. Originally tied by Darryl Smoot for the Yakima River.
Regards,
Scott