In the fall of 2009 DW and I went to Edgar Evans state park and marina.
1630 Edgar Evins State Park Road
Silver Point , TN 38582
931-858-2446 | Toll Free: 1-800-250-8619
http://www.state.tn.us/environment/parks/EdgarEvins/
Its a beautiful park and unusual in so much as it doesnt have any flat land. Because of this the camp sites look more like small boat docks because they jut out over the hillsides that they are built on. They're very solid and safe so no worries there.
The park is built around Center Hill Lake which is the center piece of this park. Some of the hills are steep so be sure that your TV is in good shape for pulling your Hi-Lo up them.
It's a beautiful park, most of its activities are focused on the lake. If you check their event schedule you might even be able to catch a ride on one of their lake tours in a pontoon boat.
DW and I think this park is great for a weekend trip.
Neal