Start by dry brining the skit steaks with about 1 tsp of kosher salt. Let the steaks brine in the refrigerator for 3-4 hours.
In a large bowl, combine the orange juice, lemon juice, lime juice, olive oil, Worcestershire sauce, red pepper flakes, cumin, and minced garlic. Mix marinade ingredients well.
Place the skirt steak in a large resealable bag and pour the marinade over it. Seal the bag and massage the marinade into the meat. Marinate in the refrigerator for at least 1-2 hours, or overnight for maximum flavor.
Preheat your pellet smoker to 225°F.
Remove it from the marinade and pat it dry with paper towels.
Season all sides of your skirt steak with your favorite dry rub
Place the skirt steak on the smoker grates and smoke for 45 minutes, or until it reaches an internal temperature of 110°F.
Fire up a separate grill to 500°F or move indoors to sear the steaks on a hot cast iron skillet.
Sear for 1-2 minutes per side, until internal temperature is 130°F (55°C).
Increase the smoker temperature to high heat, or around 450°F.
Sear the skirt steak for 1-2 minutes per side, or until it reaches an internal temperature of 130°F.
Remove the skirt steak from the smoker and let it rest for 5-10 minutes before slicing it against the grain and serving.