Jack Duvall: I caught my first blue marlin in Bimini in November 1973. As was the custom, the fish was gaffed, clubbed and hung on the scales at the dock. That was nearly 50 years ago. Our customs and habits have changed dramatically since that time. Now, in most tournaments and around the docks in the fishy parts of the world, a dead billfish is a rarity. I haven't personally taken a billfish since 1984 (and that was in a tournament, which I won). I do participate in two of Wayne Bisbee's tournaments down in Mexico each year; if we catch a blue or black marlin over 300 pounds, we will harvest it if it has a chance of winning. Otherwise, we release all billfish that are caught on my boat.