Above photo: A #19 TMC 212Y provides a wonderful canvas for this midge emerger pattern I call the Vesper Midge. A light wire and a massive 5x gape is a winning combination with very positive hookups. The TMC 212Y is one of my favorite emerger hooks. The Vesper Midge is a pattern that I have used for many seasons after experimenting with the TMC 212Y back in 1999. I originally used a parachute hackle configuration. This original pattern proved pretty successful, but I wanted a more emerger-like profile. Replacing the parachute hackle with a CDC loop wing over the last few decades has proven itself to be a killing fly and also provides a more impressionistic emerger silhouette.  The TMC 212Y was specifically designed in Japan for very selective trout such as the Japanese Yamame, aka Cherry trout, in the Hokkaido and Honshu regions. It's a very stealthy hook for the most weary trout in very low and clear water conditions. It's a hook that fills about 40% of my fly boxes. This hook...