A friend of mine asked a similar question. Every week he went to EF and complained he never caught anything. Every week he did the same thing.
Rule #1. If you're not catching any fish, don't keep doing the same thing. Do something different.
What's your favorite or standard way of fishing? Casting jigs, vertical fishing with jigs or live bait? If you're using slip bobbers and live bait or jigs, are you changing your debth, to see if crappie are deeper or shallower. You may be fishing above or below them.
If its April, and the weather conditions have been stable. I would try moving the boat along the shore casting jigs, both tube and twistertails on a 1/32 oz jig. I may switch colors a little to see if one worked better.I may also switch to a 1/16 oz jig head. At the same time I would have a slip float dragging along side the boat set at 6' or 7' to see if there were any deeper fish back away from the bank. Depending on debth, I may actually fish this even deeper. As I ease down the bank, I would fish any fallen trees or brush.
If nothings still, you may want to try a jig and bobber. Several twitches and a pause or maybe just leaving it sit for a little bit and slowly move it several feet.
If cold fronts have been coming thru, you may want to fish out away from the bank a little. Sometimes crappie will pull away from the bank after a front passes thru. They won't always go deep, but will suspend out away from the bank.
Catching fish is just a process of elimination. Keep switching around you'll eventually find them.
Please list the methods, time of year that you've tried. It will give us a chance to offer advice. Good luck