troubadour said..Don't Forget RADHAZ if you mount it on a pole down aft.

Not applicable to the new generation of small radars as they don't use microwaves the same way the old school units did.
Mine's mounted on an aft pole. Mainly because that is where the original unit was mounted. I did ache over the decision to put it on the mast, but at the end of the day it works fine and while it might not have the same range as a mast mounted unit it presents one less obstacle for halyards to catch on.