I have the Lowrance Sonar/GPS unit 337c I picked up last year, but I have not bought a chip for it yet. I will be fishing mainly Iowa and maybe some MN or SD plus maybe some Mississippi Pools. What chip should I get? DO they have upgrades when new maps come out or new lakes are added?
I see the Navionics is set-up for Lowrance units. Any help is appreciated.
Thanks!
Bob