So my confidence fly is pretty simple. CDC and Elk (Coastal deer hair actually, but Elk if ya want for larger sizes).
Simple tie, and easy to fish. This is one of the first dry flies I caught a trout on, and the first fly I tied myself and caught a fly on. It fishes well on slower water, give it a little "skitter" with the rod tip. It floats well on faster water, just drift it. Killer fly on little brookie streams.
If you're not used to CDC, DON'T use gel or paste floatant on it, use some Frog's Fanny or whatever powder you like.
I tied this in size 16 with tan CDC for the swap, but tie it in black in an 18-20 and its a pretty good late winter imitation of an early black stone. (If anyone has a burning need for some I'd be happy to pass on a few). In the heat of the summer, tie it a little larger.
Enjoy!