I put up an aluminum
post at the transom steps on my Manta Catamaran
, reinforced by a bracket to the arch and high enough so the cone of microwaves went well over the heads of anyone in the cockpit
. Much simpler and more out of the way than mast mounted.
Sailed in lots of wet and foggy places, B.C, Alaska
, Labrador, northern Atlantic coast and never a problem with distance of signal or mast or wet sail shadows. I would do that again. Was a Furuno
24mile closed radome.