From what I understand, with the 4.0 update, you can set up the bottom row of buttons as "Presets" or "Hot Key's" so all you need to do is get the unit set up for the particular settings you want. For instance, you can have one key that sets the display up for Radar/Nav, another for Nav/Sonar, etc...vs. fumbling through to get the view/settings you want to see or as the fishing conditions dictate. Again, my unit is a '09, your might already have this option.


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