John,
I do smoked duck on the WSM every year around Xmas. I use them for Smoked Duck and Andouille Gumbo that we amke as our traditional Xmas Eve meal. My method is"
I steam them for a while to degrease them. I use the fat for wonderful things.
After that I cut the leg quarters off for confit.
I soak the remaining carcass in a "flavor" brine for a while.
I then smoke them on the WSM at low temp until i get an internal in the breast of about 135-140. They are cooked enough to use at this point at least for some people!
I know this is sort of a confusing,haphazard post but I am on the road and can't get to my cooking logs. Only doing it once/year makes it hard to remember.
Save the innards,too. Duck liver pate is to die for.