Fish after the lock, just keep it in the calmer water, sometimes they're close to the current seam where the faster water meets the slower water, you'll just have to cast around a little, they're not in the same place everytime, it changes according to water flow and temp, before I tried it I would let the water come down a little more, its been too high to fish for a while and it may be a while before it gets to the right level. It may be possible to catch them now but I've always done the best when the river wasn't running so fast.
Watch these guys fishing at lock and dam #4 in downtown Frankfort, it will give you some idea, but I wouldn't fish there, I would stay upstream of pool 4, thats where the big fish kill was last year, this video was before that happened
https://youtu.be/JTBVIOpJVbg
Heres a link to where you can check the river level
https://water.weather.gov/ahps2/glan...riverid=204089