That fish was caught in 2 or more generation, not sure what the CFS was but the water was rolling. They had been generating for several hours so the initial wave of trash was gone and the water was clear, cold, and stable. The equipment I use is, a fast 8wt, Integrated Shooting head, 350 grain Orvis Depth Charge, Short leader, 2’ 20# fluro with 2’ of 10# fluro tied to that with an albright knot.
You will also want to consider the Cumberland and the Clinch. IMO the Cumberland is the best river because it handles 2 or more generation better since it's wider. I am about to make a run up there and spend a couple of days casting big flies as soon as work settles down. Another bonus on the Cland is you might hook a big Striper on any cast!
Since I don’t know you I’ll go ahead and mention that navigating these rivers under those conditions takes a little skill and knowledge of the river and a dependable boat. Stay way away from the bridge imbuements!!! They will suck you in and break your craft into. There is alot of deadfall in the river just under the surface. I recommend you float it in low water if you haven't already and burn those log jams into your memory. It is easy to get distracted fishing and forget about the dangers. BD can testify to this, we got into a bad situation once that left us both a little shook up. You don’t get a second chance in that kind of current so just be careful!
Have fun!
Mike