In a large saucepan bring water and salt to boiling. Add lobster tails. Return to boiling; reduce heat. Simmer, uncovered, for 6 to 10 minutes or until lobster shells turn bright red and meat is tender. Drain. Cover and chill at least 2 hours or up to 24 hours.
For sauce, in a small mixing bowl stir together mayonnaise or salad dressing, sour cream, parsley, lime juice, curry powder, and hot pepper sauce. Cover and chill at least 2 hours or up to 24 hours.
To serve, place one lobster tail, shell side down, on each serving plate. With scissors, cut the lobster lengthwise. Serve with the sauce. Makes 2 servings.