I know a few people from Knoxville headed that way
I'm pretty sure they're gonna do the race solo, kayaking the gorge. Not sure if anyone would be taking a raft and competing. There's probably a forum or place to find partners on the Capt. Thurman's Challenge site. Sounds like you need to find a partner, or two, and enter the team category. Good luck! No way I'd voluntarily run out of that gorge.