I've been there many times.
Camping opportunities are very good there.
My two favorite camping areas are The Energy Lake campground and the Ginger Ridge backcountry camp.
The Energy Lake campground is situated on the shore of a large bay that comes off of Barkley Lake. A jetty has been constructed that separates it from the main body of Barkley Lake, essentially making it a lake of its own, and it's a good sized body of water with good fishing for largemouth and catfish. The campground is large enough that you're not cramped in.
The Ginger Ridge backcountry camp is located on a bluff overlooking Kentucky Lake. It's very secluded and each campsite is totally separate from the others.
The last time I was there I was the only person camping in the entire area. But understand, Ginger Ridge is *real* backcountry camping. There's no facilities at *all*. It's just some slightly cleared flat spots to pitch a tent. As for fishing, there's fishing all over. Kentucky and Barkley Lakes combine to provide an enormous body of water. I'd guess that the Crappie are starting to get pretty active right now,..as are the Largemouth, but it's so much shoreline that you'll need to spend some time finding them.
It's probably best to get some information from the locals or read the fishing reports to see where the most activity is occurring.
LBL is a great place. It's not over-run with people and it's still quite primitive if you get down into it, but if you want to find some amenities, there's places to eat and buy groceries up around its northern entrance.
Here's this:
http://www.lbl.org/CAMPEnergy.htmlHere's a pretty good read,...a bit dated but probably still relevant. LBL doesn't change much from year to year.
http://articles.chicagotribune.com/..._1_campgrounds-lakes-unspoiled-shoreline