Be sure your tri tip is smoked with the fat side up for best results. As it renders, it will absorb into the meat, adding moisture and flavor.If you'd like, you can flip the meat every hour or so to help it cook evenly. Some people also like to do a final sear in a cast iron pan or on an outdoor grill to give their meat a crispy exterior crust. This step is completely optional and depends on your taste preferences.