Excellent video tutorial by the humble legend, Dec Hogan. He demonstrates how to tie Glasso style Spey…a pattern Hogan created called the The Mahoney. Hogan emphasizes the red for low, clear water.      

http://www.midcurrent.com/video/clips/hogan_mahoney.aspx

                          http://www.midcurrent.com/articles/techniques/hogan_steelhead_strike.aspx