Just like the reels, spinning rods have come a long way. “Once the right blank tapers and materials were developed, it was game on,” says Cape Cod bluefin guide Capt. Dom Petrarca. “It’s 20-year-old technology in Japan, but it’s fairly recent here,” Cantelmo explains. “The idea is to create a parabolic arch, a triangle between knee, hand and elbow.” This reduces pressure on the angler and increases it on the fish. The rod tip and midsection are generally flexible, while the butt section is stiff and strong.