Hey Jim, if you are going to do it on a smoker, I would do it at a High temp like 325-350. The duck has a lot of fat under the skin and you want to make sure the fat is rendered and also the higher temps will get the skin as crispy as you can on a smoker. Just my humble opinion, but I would keep it simple and just season inside and out with some salt and pepper. You can then make a flavorful glaze and apply the last 10-15 minutes of the cook. Duck goes good with orange so a little honey, molasses, some fresh squeezed orange juice and orange zest mixed together would make a good glaze.