you use the mallet on the bell when the fish jump move the fisher man where the fish jump use mallet again treasure map piece is in fish mouth.
go to your items and click the use button on it
If you are talking about skullduggery you use it to hit the gong to scare the fish. If you are talking about steamworks you use it to get out of the greenhouse
Stand on the sinking dragon statue in Skulduggery Island. Then jump onto the tail to get the mallet.
To get the mallet in the Dragon's port place go in the water and stand on the floating dragon statue.
it is in sully's steam powered paraphernalia
Jump into the fish tank and the fish will throw you up into the air. You land on a platform and you get the food.
Dragon Cove. To get the mallet stand on it's head.
you break it with your rubber mallet.
Push the crate with the guy on it right of the bell, then go left and jump on top of the dragon's head in the water and weigh it down and pick up the mallet and go back to the bell and use the mallet and the guy will catch a fish with a piece of map inside.
Stand on it's head, it's tail will come up revealing a mallet.
you can use the tinman mallet to flatten safety edges like a dresser.
Croquet