skipjack herring bait fish damn power plant

can anyone tell me where a good spot close to south knoxville for catching skipjack would be? any dam in particular that seems to have a healthy population?

I’m going to have 3 days off Labor Day weekend and looking to catch some skipjack. I live near St. Louis but will travel wherever if I could catch a bunch somewhere. Any suggestions where they would be plentiful to catch in September? I’ve tried several times on the Mississippi River below St...