My client is in the bow, with 70 feet of line stripped off his reel. The fish he’s about to throw to are all easily 100 to 150 pounds. I instruct him to cast to the edge of the baitball. The fly lands perfectly, and on his second strip, he’s tethered to a monster yellowfin tuna that immediately takes off with indescribable speed and power. The fly line is off the reel in the blink of an eye, and the backing on the spool shrinks rapidly. The rod tip starts to bounce, and the angler’s arm jerks hard. A second later, he lunges forward, and in a terrible instant, it’s over. My client looks down at his favorite rig, smoking and stripped clean. The fish, a brand-new line and the chance of a lifetime all sink back deep into the ocean.