NORWALK - A Norwalk lobsterman is taking his profession on wheels to adapt to a pinching economic climate. Mike Harden has opened up a lobster truck after declining lobster populations washed him out of the Long Island Sound. He says he only catches about five percent of what he used to, and that the cost of gas and bait is too burdensome.Harden says he also buys from fellow lobsterman to stock his truck.