Some of the best ones I have seen done were actually guys looking for catfish. Catfish are big[ger than crappie] and have big swim bladders so they show up well. Some of the guys that drift or troll (for walleye or lake trouts or whatever you troll for) can also see their bait on the screen and you can actually see the fish come up to it. I recommend you search youtube for some of those.

Get rid of the fish symbols, turn fish alarm off, run your graph speed at the speed you are moving the boat (set it to 3 if you are moving at 3 mph, 2 for 2, etc.), keep the sensitivity somewhere in the middle and the de-clutter feature turned to what you need to keep the screen mostly clean.

I am continually amazed at what you can see on these things when you get them dialed in and really understand what the screen is representing to you that is under the boat.