Photo: Don Coryell turned Jim Hart into a four-time Pro Bowler. By TOM SHANAHAN Before Fred Dryer played the TV detective "Hunter," he was a 12-year NFL veteran and All-American defensive end for Don Coryell at San Diego State. “Hunter” had a detective hunch about Coryell’s Pro Bowl influence on his Chargers and Cardinals players. Dryer believed comparing a star's Pro Bowl trips before and after they played for Coryell would be quite revealing. His theory was based on…