Ok, here's what i did. RAM mount for the same Lowrance fishing model *(which is the same exact housing). Found it at west marine, didnt even have to order it online! Thing works so perfect, its at perfect height, i can easily operate it and i can adjust it to any angle , plus I can rotate it so the co-pilot can see the gps.
Excuse the dust.. the rig is filthy, hasnt been cleaned since the last trip..
pics..
I can still fit my old Garmin behind the new Lowrance if i wanted to too. I just left the mount there. In case i ever needed to use it.