I always look for fish using the graph when I'm drop shotting. I have my drop shot milk run on Table Rock, I'll pull in on one, drop the trolling motor and start moving around slowly glancing down at the graph, I'll flip the rig out there 30-40 feet and let it drop, and slowly bring it back towards the boat, if there's fish under the graph cone, then I'll work it in to them and keep it there, dragging it a bit, and giving it some subtle shaking with the rod. If they are there they'll usually bite. If you don't see any fish (or shad) on the graph after covering the area, it's time to go.
The guides are real good on catching the suspended fish in deep water, it helps if you are going to do that, to mark your line at 10 foot intervals so you can drop down to the depth you are marking fish.
You'll get some bites on the drop also, watch your line when you throw it out there, if it stops falling a bit early, a fish has grabbed it.
I don't fish a DS that much on lakes that are primarily largemouth lakes. Usually I'm fishing it on Table Rock, and mostly I'll get spotted bass with it, with some largies and smalles thrown in.
There's a ton of drop shot videos out there.