December is general not a popular fishing time. Most outdoorsmen are focus on deer and waterfowl hunting, or waiting on warmer spring days to arrive.
Since early November a friend of mine Dave Hardin has been catching strippers on the Tennessee River early in the morning for the first hour of light and late in the evening for the last thirty minutes of light. Since he lives on the river it is little effort for him to make these short trips, which have been productive as the picture shows from the latest trip. 
Waterfowl hunters have also reported seeing large school of stripper breaking early in the morning. This makes them question weather they should be hunting or fishing.
A few weeks ago a friend from Ohio came down for Thanksgiving to visit family. We managed to get to the water the day after Thanksgiving for a little fishing. I had heard reports of crappie being caught below Watts Barr Dam and we decided to give it a try. We had a pretty productive day with over twenty keeper crappie and several other fish including a few undersize sauger. 
Take someone fishing, Greg