If you can't find pork belly without the skin, it's very easy to trim off yourself. I place the pork belly skin side down on a cutting board. My other hand presses down on the meat to keep it flat, and with the knife hand cut off the skin by laying the knife flat 1/8" of an inch above the cutting board. Cut the meat into 1.5" wide strips.
Apply the salt on all sides. Leave the meat in the fridge for a few hours, or even better, overnight.
Apply the rub on all sides, make sure you cover it evenly. Start with the rub and then apply the black pepper.
Fire up the grill, prepare it for direct heat. I use one chimney full of charcoal here. Try to keep it at 140° C / 280° F. Place the pork belly strips on the grates and close the lid. Smoke it for approximately 25-30 minutes, then flip the meat again after anothe 25-30 minutes so all sides get a nice char. Check doneness with a thermometer, you want the meat to reach 90-95° C / 195-203° F.
Now wrap the individual strips in aluminum foil and place them back on the grill, but away from the heat. Leave them like that for 15-20 minutes.
Now bring the meat in, and slicing and serve. Enjoy a great tasting pork belly with an amazing flavor! I made a tasty and tangy salsa verde dip sauce, you will find the full recipe here.