For many years, we raised trout in cages over the winter in our pond. Upon harvest in the spring, we always had a big party and of course served smoked trout. Ours dressed out at about 1.5-2 pounds. We smoked slow and tried a variety of woods. The best were smoked over fruit wood (apple, pear or plum). All were seasoned with salt and pepper. We placed thin slices of lemon and a bit of dill inside some. Others had a bit of rosemary. Some were just plain. Adding herbs only made a slight difference in the final product.
Low temp (200-225 degrees) took about 2 hours.
They are great served "plain" or made into a dips or used in a variety of fancy presentations (think finger foods or salads). Also good as fish cakes. Grilled lemon halves are great for a spritz of flavor upon serving. Skin on trout are not likely to break up in the smoker if you handle them gently.