Yes I have seen one
There was one done in San Diego, very expensive. It was mounted portside, aft, right by the steps down the transome, thru the deck, thru the bookcase/shelf, thru the shelf in the lockers, secoured to the hull. You don't have any margin for error, the stock was stainless, don't know the thickness but at least 3". Very, very expensive. I chose to mount my radar on the mast!