Hiwassee

For plenty of folks, Devil Shoals is a body surfing spot.  However, understand that while it is a Class II or Class II+, a big amount of the river funnels through that narrow place, and so there is plenty of push.  So keep you feet well up...and be prepared for a face-full or nose-full of water.

While not dangerous under normal flow rates, caution is always necessary around this kind of water.  Almost as soon as you hit the 'rooster tail,' you are free to start swimming left, looking for a place to get out of the flow.  However, if you want, there is nothing particular below there and the take-out that is more that Class I+, I suppose.  (Do be careful, though, when going under the railroad trestle, to not wind up pin-balling off one of the pilings or, if in a raft, winding up wrapped (although the water is not fast, it is enough, under the right circumstances, to make life miserable).

Also, note that the Hiwassee is a COLD RIVER.  No, not cold like western rivers, but typically in the high 50s, I suppose.  The only colder river I've done in that part of that general latitude is the Nantahala in North Carolina--and that's likely because the 'canyon' is so narrow that the sun doesn't hit the river except for a short while each day.