There was one on Old Hickory last year that was going on same day as a BFL tourney.
I think I even remember it being advertised on this site from one of the guys here.
You can also check with
Project Healing Waters Fly Fishing Liaison:
Scott Scrip
PHWFF Tennessee Valley Regional Coordinator (KY/TN)
(615) 364-7803
scott.scrip@gmail.com
He is with Middle Tennessee Fly Fishing, Inc.
If you ever want to try out the fly rod they can help you out.
http://www.projecthealingwaters.org/html/program.html