I just put an Elite-4 HDI in my new Outback. I'm kind of a perfectionist (read: anal) when it comes to installing things. The RAM base was installed off center intentionally to give more room to tighten the tension nob/wingnut thing...that was difficult on my OCD, but it had to be done.
I got a RAM mount and put the base in the port (left) cup holder.
Marked the first hole, and think about it for a little bit before the drilling the first hole.
Got the hardware installed for the base. Used 1/4" stainless steel machine screws with blue locktite, of course that also meant enlarging the holes in the RAM base slightly.
Had to steal the cable passthrough from the starboard side, ordered another one to replace the empty 1" hole on the nekid side. The cables are pretty stiff, but still allows the mount to be moved around and adjust the angles.
Ready to go; installed the Hobie 12vdc battery holder to the sailing mast post in the front of the hull. I picked up a 7amp hour batter for $25 local. I can adjust the screen so it is pushed back away from the rudder handle. FWIW, the Hobie battery holder and hatch liner don't clear each other to be used together.
With the head unit removed, the cables tuck into the cup holder and are clear of the top of the hull, so it will be flush for hauling upside down.
Zip tied the excess transducer cable to the seat scupper tube. I used two zip ties for now, might put a couple more on later...because I figure, "If it's worth doing, it's worth over doing."
Then coiled the NMEA cable up and secured it to the transducer cable.