Aye, swivels are small cannon, but they are full size nonetheless. So, ye can buy a swivel for $700 or a full six pounder for $10,000. If ye want to get into the game, full size, swivels are the way in. Now Grey Dog has a nice pedestal for his gun (a very nice pedestal given the others that I have seen), but why not a section of the deck and rail? A section about 3-4 feet long?