OH does fluctuate but nothing like winter pool and summer pools at other lakes around here. There are a lot of docks on OH, I would recommend either shooting or tight lining around all sides of the docks, Drakes and Cedar creeks are a good starting places. Next I would target lay downs. OH has a good crappie population but I don't prefer it for spider rigging, long lining or pulling cranks, Percy Priest would be my preference for those methods of crappie fishing. That's not to say you won't catch fish using those methods, I've just put more fish in the boat fishing docks and lay downs.
Good luck,
Ray