Turn on split-screen zoom, which provides optimum target separation and allows you to see the lure on your screen. However, tracking lure and bass movements at depths of 50 to 60 feet becomes a difficult task for liquid crystal units. I don't think anybody has the capability with the liquid crystal units that they do with the paper chart. Unfortunately the day of the paper chart sort of went by the wayside. Some of the details a paper graph shows can be duplicated with a Humminbird Wide Paramount by turning its sensitivity to plus 5 and turning off the fish symbol mode.
Every condition has to be almost perfect.
You have to position your bait almost directly under the boat, and a fish has got to come within that cone angle to be picked up on the screen. I've seen conditions when you could drop a spoon down there and catch a fish that was on the screen, but it would be difficult to match the graphic detail of a paper chart with liquid crystal.