Coach...........the same holds true for Carter's Lake, which is about an hour and a half to the east of me. It's just beyond Resaca.............and since you know about the Civil War, that name should ring a bell. ;D
During the spring and summer months, you can fish a topwater a good part of the day, especially on sunny days. The herring will move up, and stripers, white bass, crappies, largemouth and spotted bass will follow them.
Not sure if you would be interested in fishing Carter's or not, but it's a great lake to fish, and it's VERY deep. The deepest part my Dad and I found was over 500 ft., due to our depth finder stopping at 500 ft.
Another slick trick to try is to throw small crankbaits under the balls of herring. You will find that the bigger fish are down there waiting for a snack. If you can use a suspending model, or if you can modify a model to suspend, then you are guaranteed to catch fish.
Another thing that Dad and I did to catch fish on Carter's was to take a Renegade jighead with the steel wire guards, and to thread on Zoom Icicle 4" Dead Ringer. Zoom doesn't make the Dead Ringer in that color. The weight of the head was 1/4 oz., by the way.
At any rate, you can cast these around the rocky areas (which is a lot of the lake) and especially around the marina on Carter's, and you will tear the crappies and the spotted bass up.
So, while Clark's Hill and Carter's might be different, those are a couple of things that you might try while fishing their. Not sure if the Hill is as clear as Carter's is................on Carter's, you can see 20-25 deep when we don't have a lot of run off due to rain, etc.
Hope that these help ya out. ;D