Brian,
Welcome aboard! I think you would be better off trying to do as Mike said. But I have never tried to smoke a pineapple. Pineapple are great on the grill as is many different types of fruit, because of the sugar content. When you grill them the sugar concentrates and carmelizes into a fantastic tasting treat. I am not sure if smoking it would give you the same flavor since it is at a much lower temperature. But you never know. If you decide to try it let us know how it turns out!