In a bowl, rub steak down with soy sauce and a zested lime then cover for 4 hours or overnight. Remove steak from the refrigerator about an hour before cooking.
Before grilling marinade of oil, cumin, chili powder and black pepper. Rub steaks down and set aside until grill comes up to temp.
Bring grill to temperature of a minimum of 400°F. Anything over is fine.
Before putting the steaks on the grill squeeze the juice from a lime. You will baste the steak with lime while grilling.
Add the steak to the grill. The steak should take about 3 minutes to each side. Do not close the cover on the grill, leave it open.
when you do the first flip brush/baste lime juice across the top of the steak.
Remove steak from the grill after 6 minutes. The steak should be cooked through but if it isn't what you'd personally like place on a sheet pan in the oven at 400°F until the steak reaches and internal temp of your liking.