Easiest thing to do is check the Thermocline and start there. It's a lot easier than depending on what everyone else is doing. Start by what the fish should be doing and that is hanging out around the Thermocline which is probably around 15 feet.
If I was in my dads boat I could do that. But my boat used to be my grandpa's boat and all he did was crappie fish so the depth finders won't show the thermocline. I guess you could say I have to rough it lol.