I got into a black hole today researching the new fish finder technology. I believe it's is called Live Mapping by Genesis. Not sure if each company has their own version. But this one's in the Lowrance units, it's where you can compose your own charts with side-scan sonar data logged from your fish finder.
https://www.genesismaps.com/HowItWorks/Faq
The tech looks fine and dandy, but does anyone have any hands on experience with it? Is it really worth dishing out extra cash to upgrade to one of the newer units? How detailed are the charts it creates?
I'm intrigued at building some detailed maps of my favorite fishing holes.
I believe the cheapest I have been able to find is around 850-900$ for a 7" unit compatible with it.