I can't see the pic here at work, but I'm assuming it's a standard pork loin. What I usually do is marinade it in honey, soy, garlic. Heat the honey in the microwave to get it liquid then mix in the soy. Then add the garlic. Then the loin. I BBQ them on indirect (one side of grill on only, loin on opposite side, lid down) with a medium heat for 20 or 25 minutes if I remember correctly ( I have a thermometer to check).