Oil your grill grates with a high heat oil like peanut oil so the lobster will not stick to the grill grates. Place the tails cut side down on the grill on direct heat, and grill for about 3 minutes or until the meat has begun to turn pink, then flip them over to ensure the other side has gotten heat from the grill, temp your meat as soon as it starts to turn pink to test for internal doneness- don't let the lobster go past 140 internal degrees. Lobster tails are done when an
internal read thermometer like a thermapen reads 145 degrees (affiliate link).