Small BWO, baetis nymphs. An ice dubbed prince is always a good bet.
Nice upper sac fish caught on a 18size micro may just before the snow started coming down.
Dont under estimate simple flies. A few clumps of marabou will usually do the trick, just find the fish. Experiment with sink tips and different leader lengths on your floating line. Don't wait for the big one to come to you... Go to it!!!