Updating GPS Maps
I have a quick question ya'll may be able to help out with. I have a Hummingbird 788CI GPS combo and I would like to update the mapping program to show water depths as well as show more detail naming lakes and canals. I have been looking at one by Navonics but not sure if it is what I need or not. What upgrade are you using and how well do they work. Screenshots would be appreciated.
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