How do you get the 300 dollars were the catfish are at?

When you finish the mission the cats give you,wich is get the 100 dollars inside there huge safe.When you exit that safe the dog fish outside is going to get loose and he start chasing you and eat all of the cat fish.So,you know that aroun the 300 wich I suppose are in a hole on that wall there is a bridge so when the loose dog chases you to the bridge and start destroying the bridge when chasing after you he reaches the land and crash in the wall under that hole wich is the money.When this happens he will die there with his head inside the wall,know jump on the dog and then hold-z and jump to the money.Hope this helps.

Once you finish the combination and the broiler with big things in the private part mission

The bull-dogfish will get loose and you must swim for your life while the bull-dogfish eat the catfish and get so fat and when you reach the dock he'll eat the dock and crash into the wall

And you'll have to z-jump or highjump onto the fat bull-dogfish and z-jump onto the ledge where the $300 will be there and say this "So, you want some green stuff?"

And Conker says "Cool. I'll be able to get rid of my mortgage..and buy my car. Excellent!"