While the swing meter is on-screen before hitting the ball, press L2 + R1 + Triangle. Press Left or Right to change the ball's shape.
Game Shark Codes
Master Code (Must Be On) ECB5E5F4 1456E60A
Always Hole in One 4CACE5D0 1456E7A54CACE5CE 1456E7A54CACE5D4 1456E7A54CACE5D2 1456E7A54CACE5D8 1456E7A54CACE5D6 1456E7A54CACE5DC 1456E7A54CACE5DA 1456E7A54CACE5E0 1456E7A54CACE5DE 1456E7A54CACE5E4 1456E7A54CACE5E2 1456E7A54CACE5E8 1456E7A54CACE5E6 1456E7A54CACE5EC 1456E7A54CACE5EA 1456E7A54CACE5F0 1456E7A54CACE5EE 1456E7A5