I don't know if this will be of any help, but :
when you get the USA map when using the GPS map screen .... use the - or + buttons to zoom down and then the arrow > button to move the crosshairs (cursor) to your state waters.
Now that you know how to get out of simulator/demo mode, do that and then turn the unit off. When you turn the unit back on, it should take it a moment to find your current location, and once it does THEN turn the map screen on and it should be showing your location correctly.
There may also be a setting that you can click on that will take your GPS location to the current location, whether you are home or on the lake. I have my unit set to bring the map up at about 100ft aerial view ... then zoom down as I approach a specific waypoint icon.
Forget the paper "instructions manual" & open this link and print it out :
http://www.lowrance.com/Root/Lowranc...0647-001_w.pdf
Now, while this (PDF file) Operations Manual will explain what each function & setting does ... it's still up to you to figure out how to manipulate those settings to get the unit to do what you want it to do. Page #9 of this manual is what I was talking about in the paragraph above that starts out "There may also be a setting ...... " (they call it "go to cursor")
I'm going by how my Lowrance Elite 5 DSI unit works, so your Elite 7 should be similar since it's basically the same unit with a bigger screen & the 2d sonar added back in.
... cp
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