Update:
The Navoinics+ "update" is SUPER easy thanks to the fantastic Navionics software. It allows for detailed customization of the areas you want loaded on your card, including source sonar data and community inputs. I opted for the entire west coast, including Mexican waters, and my freshwater stomping grounds of Arizona.
By the way, these maps have a lot of data on them. I feel like I need a decoder ring to figure this whole thing out... LOL
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