When coals are hot, adjust rack so it is about 3 inches from the coals.
Combine the garlic salt, pepper, and salt and rub over the meat.
Sear the meat over hot coals for about 6 minutes per side, turning once.
Adjust the rack so the meat is farther from coals, about 6 or 8 inches, and continue to cook meat, turning once or twice, until done to your liking, 20 to 30 minutes.