Got a GlobalMap 3600 with the Northern Version Navionics SD from Wade a while back. I have only been on lakes that are included on that SD. Going to Missouri for a few days next week. What would you suggest I select to get a lake down there? Map Data then what? Can I add Waypoints with the North SD installed or should I put in another SD card. Sorry if this a dumb question, but I’m still getting used to using this GPS unit. Never was very good at understanding operating instructions. I’m the guy that tried to put the kids toys together on Xmas eve. then dug out the instructions to try to figure out why the wheels looked like they were on bassakwards.
Gramps