Broiling Times for Lobster Tails:
Smaller (3 to 4 oz) lobster tail 6 to 8 min
Medium (5 to 6 oz) lobster tail 10-11 min
Larger (7 to 9 oz) lobsters tail 12-15 min (with rack in middle of oven)
Broil lobster meat until opaque and white in center, or 145˚F.