One box that was virtually empty was the CDC box. F Flies and IOBO humpys were thin on the ground and my version of a CDC emerger had been completely exhausted despite tying some more misd season.. This fly has been a killer for me the last couple of seasons and seems as useful for Grayling as for Brown trout. Tied in sizes 14 through to 18 . It seems to be effective across the board.
Sometimes I include a light dubbing of rabbit around the root of the wing . It is a fly that has caught a very large proportion of all the fish landed by me this year. A very simple tie but very effective . I have recently started to reinforce the stripped herl body with UV resin . The hooks can be the very light Varivas 2200 or my preference the Daiichi D900. These are all tied with natural quill but of course dyed quill can be very effective...