Bass Hunter 64 

All lakes available 
Enter "ALLDLAKES" as a code at the cheat codes screen under options.

Extra money 
Enter "ALLDCASH" as a code at the cheat codes screen under options.

Slow boat 
Enter "WHATADRAG" as a code at the cheat codes screen under options.

Fast boat 
Enter "HYPERBOAT" as a code at the cheat codes screen under options.

Bathtub boat 
Enter "RUBADUBDUB" as a code at the cheat codes screen under options.

No snags while fishing 
Enter "BAGDSNAGS" as a code at the cheat codes screen under options.

Unbreakable line 
Enter "SUPERSTRING" as a code at the cheat codes screen under options.

Large fish 
Enter "MONDOFISH" as a code at the cheat codes screen under options.

Less fish 
Enter "WHEREDFISH" as a code at the cheat codes screen under options.

Easy to catch fish 
Enter "SUPERLURE" as a code at the cheat codes screen under options.

Fish are more active 
Enter "HAPPYFISH" as a code at the cheat codes screen under options.

Livewell filled with large fish equaling 55 lbs. 
Enter "GIMMEDFISH" as a code at the cheat codes screen under options.

Fisherman have big heads 
Enter "HEADADBIGA" as a code at the cheat codes screen under options.

Remove other fisherman 
Enter "NOCOMP" as a code at the cheat codes screen under options.

Catch Al Lindner 
Enter "FISHMAN" as a code at the cheat codes screen under options.
Then instead of catching a regular fish, you will see a head with sunglasses, a hat, and fins.

Silly sounds 
Enter "SILLYSOUND" as a code at the cheat codes screen under options.
Then the game will play different sounds when driving or fishing.

Alternate view 
Enter "GIMMEDVIEW" as a code at the cheat codes screen under options.

No penalties during tournament 
Enter "NOPENALTY" as a code at the cheat codes screen under options.

Win current tournament 
Enter "IWINIWIN" as a code at the cheat codes screen under options.

Easy tournament win 
Enter "GIMMEDFISH", followed by "IWINIWIN" as codes at the cheat codes screen under options.

Lunkers in the hidden river 
Go all the way up the river until finding a small area with logs blocking the way in.
There are around seven or eight lunkers (15 lbs. to 18 lbs.) in there as well as a huge catfish.