I am a redfish angler but I also like to keep up with what the Bass guys are doing as there are many similarities. Josh Douglas, FLW Pro, just released this new YouTube video. I'm not very tech savvy so this was great information for me and I thought I would share it for anyone that's interested in Navionics which is the card that I use.
https://youtu.be/cB3PCyBfwTc