Benj...
Glad to share the recipe in question with you but the credit must go to Captain Jack, who posted it a bit earlier:
" I suggest to cook a king-- wrap it in foil along with butter inside & out. Add all prefferred flavorings. Cook on the grill-- 15 min per #. Then remove from the grill, unwrap, throw the fish away & eat the foil."
As you can see, the point of the recipe for king (and duck) is that cooking a duck is pretty much a waste of time unless you enjoy the taste of concentrated dry liver <gg>.
mlsoft