There is just something undeniably cool about bluefin tuna. These fish swim thousands of miles, can weigh a thousand pounds, and will wage a topwater assault on a school of bluefish that is fascinating to watch. They are underwater, swimming, hunting, pelagic tanks. There is nothing about them that does not fascinate me. I've been counting down the days to my most recent stop in Bourne, Massachusetts, to fish for bluefin out of Chatham, since the trip began. I chose to fish with charter captain Jim Pechie, who has caught more than his share of bluefin including a 400-pound fish last season and knows the Cape's waters like the back of his hand.