I have a 332C I had on my old boat and when I purchased my new boat the previous owner included his 332C. I want to network them so that if I mark a spot on the front unit, it will also save on the back unit and vise versa. Is there a way to do this? I see a lot about the NEMA network, but I don't really want all the info about fuel, etc. I just want to tie the two units GPS info together.

sj