The prep for our fabulous seafood tower is simple. Delivered pre-cooked, our fresh, frozen seafood needs simply to be thawed for 24-36 hours in the refrigerator. It's recommended that after thawing you rinse the Snow Crab Claws and soak King Crab Legs in cold water for at least 15 minutes, changing water once, to remove the salt-water glaze. How to Build the Perfect Tower: Place the cocktail sauce in the center. Fill each tray with lots of ice. Arrange the snow crab claws and jumbo shrimp around the cocktail sauce. Cut king crab legs in half and arrange on the bottom tray. Add Maine lobster claws and sliced lemons.