Using paper towels, gently pat the surface of the fish to remove any surface moisture.
At room temperature and uncovered, allow it to dry for 1-2 hours. Set aside. Chef's Note: This allows a pellicle to form which is a thin and slightly tacky layer on the surface of the fish, which helps the smoke adhere and enhances the overall flavor. Prepare the smoker accordingly and preheat to 180°F.
In a small bowl, combine ¼ cup honey, 1 Tablespoon of balsamic vinegar, 2 Tablespoons of fresh squeezed juice from an orange, 2 springs of chopped rosemary, ¼ teaspoon salt, and ¼ teaspoon black pepper. Mix well to combine.
Divide ¼ cup of the mixture in a separate bowl and set aside. This will be used to baste the fish once it's one smoking.
Using the remaining citrus glaze, generously baste it onto the fish until covered.
Place the salmon directly on the smoker grate, skin side down. Close the lid and smoke low and slow.
After smoking for 30 minutes, take the same bowl of glaze used for the initial basting and apply another layer onto the salmon.
The salmon is done when the internal temperature of the meat reaches 145°F.
Remove the salmon from the smoker. Baste on the unused honey orange glaze and serve after a 3-5 minute rest.