A big tide swing pushed a strong current through the cuts in the Florida Keys as Capt. Robert “R.T.” Trosset used a bow-mounted 36-volt Motorguide Xi5 trolling motor with Pinpoint GPS to bring his Yellowfin 24 Bay close to one of his favorite bridges to fish for grouper. “Are you going to anchor here?” I asked. “Sort of,” Trosset answered, activating the anchor function on the boat’s Lowrance HDS multifunction display, which was set in the Smart Steer mode and linked with the trolling motor, making the boat hold steady. Trosset had set us up for fishing the abutments without even opening the anchor locker. As if tethered by an invisible rode, the Yellowfin 24 held its position into the current until Trosset used the jog arrows on the HDS display to move the boat from side to side to fish different abutments of the bridge.