So I'm pretty much a Neandertal when it comes to electronics but I've got a Simrad on my new skiff but no transducer. The main thing I want is the satellite overlay for tracks through broken marsh. Anybody have any insight on setting that up for idiots like me? Reading the manual I'm not sure if I've got to get a separate chip or not. Right now I've just got the mapping/chip that came with it.