Prepare the Marinade:
In a bowl, whisk together pineapple juice, soy sauce, brown sugar, ketchup, rice vinegar, ginger, garlic, Worcestershire sauce, sesame oil, and red pepper flakes. Reserve ½ cup of the marinade in a separate container for basting.
Marinate the Ribs:
Season the ribs with salt and pepper. Place them in a large resealable bag or dish and pour in the marinade. Marinate in the refrigerator for at least 6 hours or preferably overnight.
Prepare the Smoker:
Preheat your smoker to 225°F (107°C). Add wood chips according to your smoker’s instructions.
Smoke the Ribs:
Remove the ribs from the marinade and pat dry slightly. Place them on the smoker, meat side up. Smoke for 3 hours.
Wrap and Continue Smoking:
After 3 hours, wrap the ribs tightly in foil and return them to the smoker for another 2 hours.
Finish and Glaze:
Unwrap the ribs and brush with the reserved marinade. Smoke uncovered for 1 final hour, basting occasionally to build a sticky, flavorful glaze.
Rest and Serve:
Remove the ribs from the smoker and let them rest for 10 minutes before slicing. Serve with your favorite tropical sides.