Abstract: A golf club practice apparatus is provided for use with a conventional golf club. The practice apparatus includes a sail having opposed front and rear surfaces, and attachment means along the central axis of the sail for attaching the sail to the golf club adjacent the club head with the front surface of the sail squared away with the impact surface of the club head. The attachment means included gripping means for gripping the golf club when the sail is attached to the golf club to prevent the sail from twisting on the shaft from the squared away position. When the apparatus is attached to the golf club, it raises the wind resistance of the golf club relative to the amount of wind resistance exhibited by the club during swinging movements made without the sail being attached, and this increased resistant is obtained without creating any torque forces on the club.