I just went through the log of my last 25 trips. The only months not represented were December and February. Total of 14 different streams in the GSMNP and Cherokee NF. I stopped adding up the trout at 150.
I only saw five trips where I did not use a hare's ear; parachute or nymph. I do vary the hook some (1x and 2x length on drys, 2x and 3x on nymphs) and tie the nymphs with and without beads. I will blend in some black and brown. When I did wander, it was to a muddler, elk hair caddis, stimulator, neversink or a parachute Adams. For nymphs I did try an occasional pheasant tail nymph or caddis larva (tan or olive wire), and of course a greenie weenie.