Tellico is my home lake since I live a mile from a boat ramp and there's hardly a cove from the 411 bridge to the head waters of the "little T" or the Tellico river that I've not fished at some point. After years of keeping a journal of every trip I can look back and find spots that produced fish with different conditions. This more than anything has helped me be successful at catching Crappie on Tellico.
I have found that the Crappie in Tellico like mud flats and that any structure or bottom contour differences in that mud flat will have crappie on it. So here's how I fish those flats to find the small scattered schools. I rig 4 rods (2, 10' and 2, 8') with 2 different color flies tied 12-18 inches apart on each rod. Here's a tip... put a swivel 18 inches to 2 feet above the flies and this will stop the line twist experienced from dragging a fish in. Then I put a float on each rod starting 2 feet from the average depth of the bottom and move each of the other floats just a little shallower. This way I'm fishing 4 different depths until I find where they are in the water column. I also tip each fly with a minnow.
I have played with different speeds at different water temps but .5 mph seems to produce no matter what the water temp. I pull these floats long line style until I find a school and then I turn around and cast to them to see how big the school is.
My favorite colors are blue and white but I also use black, purple, red, green, pink and different shades of each.
Don't be afraid to "fish outside the norm" because I've caught crappie in 18" of water with the water temp 35 degrees. From everything we hear and read they shouldn't have been there but I kept watching seagulls feeding there and I hadn't caught a fish so I ran the seagulls off and wore the Crappie out.