Ocoee is the best bet. In addition to what Leland said, and within a tolerable drive, you also got Tellico (IV) and Cheoah (IV and highly recommended). Looks like there is a Cheoah release scheduled for July 7th & 8th.
You could also check out the N.O.C. (www.noc.com
) on the nantahala. I think they rent boats and have a new park a play hole that will host the Freestyle World Cup this year.