Cheat mode
 
 Highlight the "Memory Card" option and press R1, R2, Circle, R2, R1. If you
 entered the code correctly, you will hear a sound. -From:
 porterbrad43@hotmail.com
 
 
 Game Shark Codez:
 
               
 Always Place First           
 8009DD58 0001
               
 Infinite Boost on Pick-Up    
 80050B86 2400
               
 Infinite Countdown Timer     
 800972DE 0063
               
 Stop Track Timer             
 800972E2 0000
               
 Max Cash                     
 800966B4 FFFF
               
 Unlock Medium Tracks & Boats 
 300A2245 0000
 300A223D 0000
 300A2240 0000
               
 Unlock Hard Tracks & Boats   
 300A2243 0000
 300A223F 0000
 300A2244 0000
               
 Unlock Bonus Tracks & Boats  
 300A223C 0000
 300A223E 0000
 300A2242 0000
 300A2241 0000
 300A2247 0000
 300A2248 0000
 300A2246 0000
               
 Unlock All Tracks & Boats    
 800A223C 0000
 800A223E 0000
 800A2240 0000
 800A2242 0000
 800A2244 0000
 800A2246 0000
 800A2248 0000
               
 Unlock All Tracks & Boats    
 50000602 0000
 (GS 2.2 or Higher Needed)    
 800A223C 0000
 300A2248 0000