I fished yesterday above the weir and down at the church.
Caught fish in both spots but not many.
There were tons of tiny black caddis in the trees down by the church but none hatching.
Sometimes large nighttime hatches of caddis can slow down daytime fishing (see "Henry's Fork").
High sun can also put the bite off.
If it's a sunny day I'd fish the deepest water I could find or fish early/late.
As far as how the fishing CAN be: I've landed quite a few 18"+ fish in the past couple months, all in one top-secret public access area.
Also- Yesterday TVA wasn't supposed to run generators til 6, they turned on 2 at 4:30.