Mine was installed by the shop where my boat is stored in the off season, and I know they contacted the manufacturer to get the location for my boat -- also confirmed use of a transom mount transducer for the my hull, which I wondered about. I think I would start with the manufacturer's help desk, or maybe online mounting instructions for your hull style.
I would think a location might be half way between the trim tab and outdrive, probably on the starboard side if that's where your console is. I'm not sure where mine runs inside the hull, but would probably want to determine your routing early -- looks like you could go through the transom up near the top of the engine compartment, for example, if that will work.