I live in the area and have fished all three lakes. SOHO (South Holston) and Watauga are the favored lakes. Watauga is the second or third cleanest lake in North America (I think that cool). Some of the local forums suggest Jacobs creek, Minton hollow, fishdam creek, browns bottom using topwater in the early morning and late evening then switching to jig-spinnerbait-and worm after dark. That's the report on SOHO.
Some of the local yakkers went out this past weekend in Boone around Pickens Bridge. It's a small TWRA boat ramp on Boone. They had some good success around that area fishing for LM. Not sure what they used though. I would say they used spinners and jigs. i don't like Boone very much myself. The bottom is real rocky.
All the local lakes are down right now as well. the TVA has lowered the lake levels several feet. Another good local lake it Ft. Patrick Henry. The reports from there are top waters and creature baits around creek mouths. These were late evening trip report as well.
All these reports are from the past week (9/27-10/03). I'm by far no expert on fishing these lakes. I know that Watauga and S. Holston River offer some great fishing esp for Trout. Wilbur Lake in Carter County (near those you mentioned) has a great history for trout. I would also suggest Watson Marine. They are the local boat/tackle shop in the area and may have some great advice on where to go. They are super nice guys working and hanging out there. I hope this helps!