Sir; I have some questions for you, please do not take offense if I sound blunt.
(1). Is your bait on the bottom, or a few feet above the bottom. Shore fishing I place my weight on the bottom and have the bait on a slack line 18" above bottom. I use 150lb test to the bait hook, but the weight is attached to 30lb test so I can lose the weight but keep the fish.
(2). Bluecatfish school just like crappies therefore when one picks up your bait it will run with the bait trying to get away from the rest of the school. Let the cat take the bait and run with it, feel your line and when you are confident that it is swimming freely with it then set your line.
(3). Shore fishing; I pitch, tighten the weight line, then loosen it a foot and set the bait clicker. Folks have seen me fishing and get excitied and scream at me to "set the hook." I will only after the fish is freely running with the bait, I click off the bait clicker and thumb the reel to slowly control outfeed and to feel the fish running. From a boat I use no weight at all, let the bait swim.
(3). Yes I am catching but only at night, and only using fresh bluegills. If live bluegills are not working, fillet it out like a crappie, weave 1/2 of bluegill fillet on hook with the head on the bottom (tip of hook) this presents a very juicy bait.
(4). You are fishing in the right areas, I am still doing well in drop-offs. We had bluecat for dinner today that was caught this morning at 3:20am on G14.
(5). Do you have a fish finder, sonar, radar, whatever...so you can see the bunches of baitfish suspended on the drop-offs? That is the key, no bait, no fish , no kitty's to eat.
(6). I exclusively use bluegills, period.
(7). A fish finder is essential in finding the bait fish schools, get one and learn to use it well. It is essential for night fishing.
(8). Start thinking like a shad instead of a 50lb bluecat, why? Rule #1 is big things eat little things. The drop-offs provide the plankton the bait-fish thrive on, plus an environment in which they can seek different depths to survive.
This morning we were acidentally catching crappies at 40 feet down at G14 just playing around with jigs waiting for the big kitty's to latch onto something. There are tons of baitfish in Truman right now, one hour before dark you could catch all the shad you want on top of the water. The 'mayfly' hatch is thick right now so the small fish are eating them up and growing fat.
We have been having difficulty catching blues and flats on live bluegills so we switched to bluegill fillets and are doing as well as always. We believe that currently the catfish are stuffed with the abundant food and will not struggle to chase live bait as they usually do, we know because the several large cats we brought home this morning were gut stuffed with shads, they had bloated bellies. Good luck and do not park in one spot, 15 to 20 mins. then move, think like a shad, get a fish finder with lighted graph so you can see the bait schools. Good luck!