Here's an interesting subsurface pattern I tied as a demonstration pattern at the Oregon FFF Flytyer and Flyfisher Expo many years ago. This was the handout. The name is misleading. You'd think the fly would be a green color. Story goes, John's wife was cooking wilted spinach when he originated the pattern so he decided to name it for what she was cooking. I've only tried it in stillwaters and in size 18. The first time I tried the guy, it was a hit with the trout at a private flyfishing lake. For some reason (at least in stillwaters), it works best during midge hatches but looks nothing like a midge emerger. Go figure. This pattern is todays flytying project. Sooner or later Spring will show up and I'll be back in the pontoon boat on lakes.