No these are more of the blackish, greenish and some times differentLongbike are they the blue spiny lobsters?
The trick to the tails: After you dis-connect then is to break of on AntennaYou only eat the tails and you want to keep them alive and well in ocean water or immediately on ice. Once back to the dock you wring them by twisting the tail off.
On average I would say you eat two beyond that you feel sick. They are very rich and most of the time dipped in melted butter. And yes you can freeze them although fresh tastes better.