I knew this would happen!!!! LOL
Here's a point I think should be considered, as I said before:
Fly shops out west (Yellowstone region) do not carry size 10 Grey Wulfs. Guides do not put such flies on your line. These guys are in the business of helping you catch fish - or you wouldn't be happy and wouldn't buy/contract again.
Believe me, Mike Lawson and his guides want folks to catch fish. Craig Mathews and his guides want folks to catch fish. Bob Jacklin wants his clients to catch fish. Rene Harrop and his guides want the customers to catch fish.
Next time you're out there, check what flies the guides are using for their customers.
Anyone identify this style?: