By Viper
Max Power Modifier (Default 0005)
81076FBE ????
Power Increase Rate Modifier (Default 0001)
81076FC6 ????
FFFF should cause it to decrease by 1

Power Never Increases
81076FC0 1000
Power Never Increases (Alternate)
81076FC4 2400
Power Never Increases (Alternate 2)
81076FC8 2400
Power Never Increases (Alternate 3)
81076FB4 0801
81076FB6 DBF4
Don't Lose Power From Missing Buoys
811F13C4 2400
Starting Power Modifier
81075A98 2400
81075A9E ????
81075AA0 1000
Miss Worth Modifier (Default 0001)
810770A6 ????
Misses Don't Count
810770AC 2400
Number Of Misses To Retire Modifier (Default 0005)
810770B4 3418
810770B6 ????
Out Of Course Timer Increase/Decrease Rate Modifier
811F1FDA ????
FFFF is the Default. FFFE will make it go down 2 at a time, FFFD - 3, etc. positive nummbers like 0001 will increase it.

Out Of Course Timer Doesn't Count Down
811F1FE0 2400
Disable Out Of Course Timer
8107A520 2400
Lap Timer Doesn't Run (Stays At 0'00'000)
81076AA8 2400
Stunt Mode Timer Increase/Decrease Rate Modifier (Default FFCE)
81078556 ????
Stunt Mode Timer Doesn't Count Down
81078560 2400
Stunt Mode Timer Starting Value Modifier (Default 3A98)
81075B7C 3418
81075B7E ????
Watercraft Modifier P1
800DA9C3 000?
Watercraft Modifier P2
800DA9C7 000?
Activate this Character Modifier by pressing and holding joystick in up position while at watercraft select screen.
0 - Watercraft #1
1 - Watercraft #2
2 - Watercraft #3
3 - Watercraft #4