What I mean by the transducer comment above is:

If I am at the front, I can change that unit to read the front transducer. While looking at the helm unit, it will automatically change the view to be reading from the front. Structure scan is not effected. Originally, I wanted the front unit to utilize the front transducer while the helm unit utilized the rear transducer and then both units shared the structure scan data. It doesn't work that way though.