Tied these up for a Great Lakes Steelheader customer on A.J. 1.5 standard and heavy hooks. They really soak up the material in that size! For atlantics, I've never used anything larger than a 4, and usually a 6. Incredibly effective fall pattern on the Miramichi, created by Bob Warren. Photo of Bob's tie, and original pattern, in Bob Veverka's Spey Flies and How to Tie Them.