The best way to catch the blue cats that liveliner was talking about it to find steep drops off the main channel in whatever lake you are fishing. Look for where the last two deepest topographic lines are found close together on your maps and there should be fish in the right depth range for this time of the year and for most of the year in general too. Fish with live or fresh dead baits if possible but chicken brests, hot dogs and even spam can be used for bait and do well for you. Use a sinker that you can feel the bottom well with but isn't so heavy that you hang up in the rocks all the time. I tend to use the lightest one that I can get away with depending on the current. If the current is moving fast, greater than 30,000 cfs at Chickamauga dam often I have to go to a 1oz sinker to hold bottom well enough. Usually I can get by using a 1/2 oz sinker. If you can throw a cast net you can catch all the bait that you want late in the afternoon when the schools are on the surface but until later in the year you will have to use a 1/4 inch mesh otherwise the baits will slip through the mesh. Everything is eating those little threadfins and you can catch all the cats you want on them. I have about a half gallon of frozen threadfins that I caught last fall and the cats eat them up like crazy. If you know how to catch skipjack and you have the time to catch them you can put in below the Chickamauga dam and usually catch them all day long down below the wing wall in the eddie there. Good luck and hopefully you will have a lot of fun and have some good meals too.