I am not sure about Watts Bar. I believe someone wrote earlier about wading around there. You could certainly do Melton Hill or Loudon from shore if you could get some room to cast. Of course I would suggest doing it with the water off, in order to get your fly down. Occationally they bust the surface generating but think you would have a tough time getting a Crease fly big enough that could compete with a big Zaraspook. You just need to call me sometime and we will go.
I am a great admirer of spectator sports, especially on television; it keeps the riffraff off the trout streams.