Plot: It's week eight of the Atlantic bluefin tuna season, and as the season ticks past the halfway point, the Gloucester captains are determined to work harder than ever to put tuna on their decks and charge into the rest of the season as strong as possible. But being on the water for the past two months is taking a toll on crew members and one mate faces a dilemma — keep fishing or quit so he can spend more time with his wife and kids