Add salt and pepper to taste (I do about 1 teaspoon Kosher salt and 1/4 teaspoon black pepper).
ADD NO LIQUIDS AT ALL.
Put the turkey skin side up and cook on low for 5-6 hours.
If you have any issues with the skin crisping, you can brown under a broiler, six inches from the heat, for 1-2 minutes or let it cook with the top slightly opened for the last hour to let any steam escape.