IDK where you are but I shore fish in North Texas at a ton of overfished, high-pressure, and super spotty recreational areas and have had extremely similar results - until this week with my discovery of the Ned Rig. I've not used it in a lot of places just yet, but the last week or so have sold me on the concept. It's the only thing I'm even getting bites on right now, and in some places I'm the only guy catching fish. I usually cast it out next to the edge of cattails, lily pads, the tallest grass you can see. If there's trees hanging over the water, the shade under them sometimes works. Had hard strikes in all those settings. Even a few in open water.
Try a 1/16oz ned rig, use a flashy craw or 2.75-3" dinger (I buy the 6" ones and cut em in half) in muddy water, a subtle pumpkin/black etc in clear water. Watch videos on how guys fish it and read some interviews about it with Ned Kehde - it is a finesse rig so small movements and a slower retreive are better.
hope this helps