Forces on sails to stay within the limitations of a craft's stability and power requirements, which are functions of hull (for boats) or chassis (for land craft) design. Sails derive power from wind that varies in time and with height above the surface. In order to do so, they are designed to adjust to the wind force for various points of sail. Both their design and method for control include means to match their lift and drag capabilities to the available apparent wind, by changing surface area, angle of attack, and curvature. Wind speed increases with height above the surface; at the same
1975–76 San Diego Sails season The Sails had only one home game in October and finished the month with a record of 1-4. On November 1 the Sails finally returned home, losing to the Virginia Squires 109-105 before 2,396 fans; Ticky Burden led all scorers with 45. The next night at home the Sails defeated the San Antonio Spurs 105-102; James Silas had 28 for San Antonio to lead all scorers and attendance was only 1,670. On November 5 the Sails returned to the road for a rematch with the Virginia Squires which the Sails won 118-104 despite Ticky Burden's 40 points for the Squires