Symmetric spinnakers have the windward clew secured to a spinnaker pole. Since spinnakers are downwind sails, they are never tacked, they are only jibed. Jibs and spinnakers are the two main types of headsails on a modern boat. Maximizing performance and effective sailing of asymmetrical spinnakers requires unique sail and boat trim. Asymmetrical spinnakers are often paired with chutes. Unlike the other, tanned sails of these boats, the "spinnakers" were usually of white color. For racing purposes, extra sail can be carried&colon; additional staysails and spinnakers. Symmetrical spinnakers have large amounts of camber, making them nearly hemispherical. Many restrict the use of spinnakers, trapeze harnesses, and the use of twin headsails. Reaching spinnakers have less camber as they operate within an airflow that generates lift. They were carried in addition to spinnakers. Various types of spinnakers, can be used with it. The American Y-Flyer class rules forbid the use of spinnakers. In 1984 Spinnakers Brew Pub opened in Victoria, British Columbia, Canada.