I did a week trip at the South Houlston river in Tennessee. We did well on trout. All browns are wild and rainbows are both wild and stocked. This is a prime river to fish for both fly and spin fishing. Hatches almost every day and some very large brown trout. These are not pushover hatchery fish but the real deal.
We fished the Watuga also. It as well as the SoHo is a tail water fishery. It is also used as a power generating source so water levels change from a few inches to a few feet and extremely hard wadding water. This change makes these rivers 2 in one fisheries. It is a 7 hour trip from South Central Pa but well worth it for the serious trout fishermen.