Good advice above.
Another idea...you can attract threadfin shad with moving water. A common practice is to crank on a pump in one corner about two hours before daylight, and at daylight run a short seine across the corner. You'll catch lots of shad.

Bluegills, on the other hand, set up a feeder in the corner, and once you have plenty of fish coming to feed, seine the corner.

I worked with a fish farm 35 years ago...they had 20+ acre lakes. In one corner, they built a levee about 75 feet long, parallel to one side, 50 feet away from the side, creating a little "cove". They'd set up a pump, drafting water from the big part of the lake, pumping it into that narrow cove, creating a current, pushing water away from the cove, into the main body of the lake. They'd leave a seine on the end of the short levee, with a rope attached, to quickly pull the seine across the cove, blocking fish from escaping, then pull the seine, collect and move the fish. It was very effective.

Teach a man to grow fish...
He can teach to catch fish...