Step 10:

6 hours later, take out the marinated carne asada. Let it come to room temp for 20-30 minutes before grilling. During this time, heat up the grill. You'll want to cook quickly and directly on the hottest setting, or on some hot hot coals.

Almost there...
  
 
 Step 11:

Done! It should be still a little pink in the middle, but charred and crispy on the very ends. Cover with foil and let rest for 5-10 minutes so the meat can reabsorb its juices.