Capt. Chris Britton, a tarpon and snook fishing specialist based in Stuart, Florida, uses his Humminbird Helix 12 CHIRP SI GPS G2N to locate fish in quick order. "Before this technology, I'd spend a couple of hours fishing a spot, and then move if it wasn't productive. Now we'll set up where the fish are, like in cuts and channels, or along the beach, no more guessing," Britton says. "For tarpon, I'll stay off to the side and scan 60 feet out. If we mark fish, I'll slide the machine's marker over them and learn their exact distance. Then I'll position the boat up-current of the fish, hold in place by activating the trolling motor's GPS lock, and drift live baits to them.