I just go 475-500 on the grill and let it rip for about 3.5 minutes a side. This was a 3 day marinade in olive oil, fresh squeezed lime, and minced garlic. Room temp for 45 min. Salt and pepper about 10 min before heading to the grill. After 7 min, let it rest for 10 min. Resting is crucial when cooking like this. Gets infinitely more tender after 10 min.