Right now you can catch them in the backs of coves in 5 to 14 feet of water(. Early in the morning and late in the evening are the easiest times to catch them. Sometimes you can see them "tick" on the surface, what I mean when I say "tick" is the shad will come up and just barely break the surface of the water. This is a good method for locating the school of shad. Most of the shad I have caught in Jordan are Gizzard shad. On locations to look for them I would say the cove that the Poe boat landing( around the bouys or past them), near the dam and behind the islands (around the edge of the grass in the coves), at the mouth of the same cove across from the dam. I have also caught them in the back of the cove near Ebenezer that has a small island with a ton of Comerants and Blue Herons living in the tops of the pines on the island, go in the back of this cove past the boat landing and there is another small cove on the right just past the landing ( be careful there is an old roadbed that runs across the mouth of this small cove and it gets shallow but not too shallow to idle across). I have caught a good number of shad in there as well. Also if you have a light you can get plenty of bait at night in the mouths of these small coves I have listed.
Hope this helps you out, don't get discouraged if you come up short it is pretty hard with the water at 88.6 degrees. Definately much easier in the spring and fall but not impossible. Shot me a PM if you have any more questions I could help with.