Yes, I've seen them also. I remember one time last year, when I was fishing Miller Island and saw spin fishers hauling trout out of the Clinch by the bucket full. I said something relatively polite like they had better be careful or they might get a citation. Didn't confront them directly as there was two of them, and one of me.
Hopefully with greater enforcement along the Clinch, the word will get around to go someplace else!