I've been there a bunch. Your a bit late for great crappie fishing but should be prime bluegill time, and Reelfoot has lots of big bluegill.

Best deal is to ask an outgoing party where they were having success. We always caught lots of nice bluegill right in the shade of the lilly pads, but the whole darned lake looks like great fishing, so you just need to keep moving till you find them. Most of the lake is 6' or less in depth, so fish about 3' deep and keep moving.

Another fun deal is to buy a few of those YoYo reels they sell in the bait shops and set limb lines for channel cats. They are pretty easy to catch.

Reelfoot is a great place, have fun.