If you have the time, certainly! Tri-tip does very well with a marinade. Try out this orange chili steak marinade. Soak the tri-tip in a sealable bag or large container overnight before throwing it on the Traeger. Once you remove the tri-tip from the marinade, lightly dry it off with a paper towel, coat it in the dry rub, and begin smoking on the Traeger. Instead of marinating, you can also dry brine the tri-tip. After applying the dry rub to the steak, wrap it in plastic wrap and place it in the fridge overnight. This will help to make it juicier and add flavor deeper throughout the tri-tip.