After extensive Interclub sail testing, and solid performances at the 2007 Annapolis Midwinter's and Manhasset Bay Nationals, Doyle Sailmakers released the Doyle Radial Interclub Mainsail. The improved 'active leech' will open in light air up-wind conditions yet can be trimmed firmly for full-powered up-wind sailing. The Doyle Radial utilizes slightly heavier cloth in the leech for increased durability for high mainsheet tension in full-powered conditions. Downwind, the Doyle Radial has improved light air performance with the 'active leech' as well. Jud Smith has been the brain power behind the all new Doyle Radial!