OK so after looking at the mounting options for the Ulterra that is not a route I want to go.

what I am thinking is Helix 9 combo hooked to US2 in trolling motor and ethernet to the 998.

this would give me 2d at bow, maps, and if I wanted I could view DI/SI data from the 998 via network. this is assuming I bought a SI Helix.

If my understanding is correct then I would likely buy the Helix 9 gps combo and would have 2d (what I use primarily due ton lack of experience with DI) at bow and maps. Those are my 2 primary wants at this point.

Thoughts? Am I missing something or making a mistake in going this route?

I'm also open to moving the 998 to bow and buying a new unit for console...

But I definitely don't want to mess with mounting hardware for Ulterra transducer. So whatever I do will need to utilize US2 and my current SI ducer on rear of boat.