The three of us were standing in waist-deep surf. In our underwear. In the dead of night. Shark fishing. I remember thinking, This is probably a really bad idea — and, no, we weren’t drunk. The big greasy hunk of raw meat on the end of a huge hook, tethered to a ropelike line I was gripping tightly, just had to be spreading blood in the water. It was a beautiful night, though, there on the north side of Trinidad on my last day visiting my friend Jim on the island.