Generously apply dry rub to the portions, entirely covering the ribs.
Lightly spray aluminum foil pieces according to the number of portions. Place one portioned rib, meat side down, in the middle of a grease aluminum piece.
Wrap it tightly making sure the seam is up and place the packet on a baking sheet (seam side up); wrap the other portions individually as well.
Transfer to the fridge for 8 hours or overnight.
Bring the barbecue temperature to 300ºF.
Place the packets, seam side up, and cook for 2:30 hours, swapping positions halfway through cooking.
Carefully remove the foil and discard it. Place the ribs, meat side up, and generously brush on BBQ Sauce.
Turn all the burners on and bring the temperature up to 500ºF to 550ºF.
Cook the ribs for an additional 15 to 20 minutes or until lightly charred and the internal temperature reaches between 195ºF to 200ºF. Serve immediately.