Designate a person on the rail to call puffs throughout the race, and have them count down, “3, 2, 1, breeze on.” Upwind, the helmsperson and mainsail trimmer can anticipate the puff to maintain a consistent heel angle. Downwind, when a puff hits the helm it loads up the sail and the boat accelerates. The helm must respond. In light air, big gains can be made by looking behind for puffs while sailing away from the wind. If you see a puff behind sliding to leeward of the boat, consider jibing to take advantage of the pressure.