over here in Canada every one uses the hot water dunk before plucking, we had never heard of it before, but now we wonder how we ever managed to dry pluck a bird, what you have to do is chill the bird once its plucked and gutted we use a large plastic barrell with cold water and lots of ice,we start making large ice blocks weeks before the event and store them in the freezer.
also the prefered method of dispatch here is a large plastic bucket or container about 20 litres with a hole cut in the bottom screwed to a tree or post drop the bird in head first pull the head and neck through and cut off the head, leave to bleed out, then dunk in hot water and pluck and clean.