My solution
On our 380 we did the following;Put radar on mast near top spreadrers.In the cockpit at the front (forward end) of the binnacle is a small stainless grabrail. I took this off and bought a bigger stainless grabrail with a mounting pod. Edson I believe. Radar lays right in, no exposed wires, you still have a grab rail when you come up from below. It was a beautiful idea, and the other instruments and VHF can be left alone. Grabrail, mount, pod, and removal of old grabrail during commissioning costs about $500, but after having lived with it a year, I wouldn't do it any other way.Bob KnottH380