Another question about fish finders

[Gumbo]

I had a dual-freq transducer on my old Lowrance 350A and I ran it split screen showing both transducers all the time (when I didn't need the GPS showing in one half). Both views showed different details. But I didn't miss the feature when I sold that unit.

Another factor with vertical pixels is that the graph must have the processing power to be able to convert info from the transducer into those vertical pixels. A good way to determine the processing power is to look at the unit's scroll or ping rate.