back in August we were in Yellowstone Montana for the conclave
One of the fly patterns that outfished quite a few of the guys was the wire woven nymph.
tying as follows
hook no 12 wet
silk black 8/0
tail claret dyed cock pheasant
body black and silver utc wire
wing case clare cock pheasant with tinsel over the top
thorax black 8/0 thread
legs claret cock pheasant

try it out you will not be dissapointed
http://www.finneysflies.com