I have been to this small lake in Eastern Washington twice in the last week, both times there have been lots of trout taking bugs of the top. Sometimes they are sucking bugs and you here that pop, most of the time they are coming all the way out of the water, sometimes they are taking something just under the surface and I see there tails go in a circular motion, but I haven't been able to see any bugs on the water, in the water, etc. I have been trying lots of different patterns with very little success. Has anyone had this experience and found a pattern that has worked well? The only thing I have caught them on is a size 22 black midge, but half the time I can see them swim up to it and then swim away. About the only way I can get any to take the midge is to start twitching it and a lot of times it is when I am pulling the fly across the top of the water that they take it. Any suggestions on patterns and techniques would be appreciated.