Question: how long do you cook a 4 ounce lobster tail?
Answer: Thaw frozen lobster tails in the refrigerator for the best results. ... 
Add the water, salt and seaweed to the pot and bring it to a boil.
Add the lobster tails to the boiling water and cover the pot when it boils again.
Boil the tails for five to eight minutes, or until the shells turn red.