Preheat oven to 300F
Remove thin membrane from back of ribs by slicing into ribs with a knife and pulling membrane off with paper towels.
combine salt, garlic powder and pepper; rub all over meaty side of ribs. Cut racks in half, if desired.
Arrange ribs in a large roasting pan. Cover tightly with foil Bake 3 hours or until very tender.
Uncover and cool for 15 minutes. Drain.
Preheat grill to medium-high heat (about 350F.)
Place ribs, meaty side up, on grill rack rubbed with oil. Generously, baste meaty side only with barbecue sauce.
Grill, covered with grill lid, 10 minutes.
Baste again, and grill 5 to 10 minutes longer, or until sauce clings to ribs.
Serve immediately and enjoy!