What charts would be best to use in my 2- new Solix 10 Gen 3's for Georgian Bay and inland lakes in Central Ontario? I bought one Auto Chart zero Lines . Do I need 2 if I am networking the units together? I'm about to install one on a Stowaway mount on the bow and one on a Geigertec pro mount at the helm of my new G3 Angler V18SF . Thanks!