The small wading streams do get tight lipped. I have some you can't buy off me and that has kept some big smallies there for years.
My suggestion would be get a map or TN fishing guide book, find major tributaries to the lakes, follow them backwards until you hit wading water then go up stream from there. There are also others just scattered that don't dump into a major body...those are real gems.
2 things to remember.
Always ask permission when going through private property.
&
If you find a good one..... don't tell a soul.