You could try my approach, while unorthodox it produces fish.
Approach1:
Fish going downstream with dries making long casts and extending your drift by feeding line out.
Works well in low and clear water.
Advantages are not lining fish, casting long distance and feeding line out avoids the fish seeing you.
Approach2:
Fish going downstream throwing long casts with a streamer or sculpin. Pay most attention to cover and undercuts. Be sure to fish all columns of the water. Bottom, middle, surface. Pending on where the fish are hiding, they only see a window, you have to put the fly in that window to entice them out.
Advantagesare not spooking target fish and not worrying about the ones you do.
Approach3:
Fish going upstream slowly with a streamer or sculpin. Again paying all your attention to structure and especially mid channel structure. You can dap your fly right at the structure while standing right behind it.
Advantages wake disturbance goes downstream and you can get close to structure without spooking fish.
Limestone streams are mini enigmas and it's fun unlocking them. Don't give up