Instructions
Press the "Start" button on the GameCube controller to open the Item screen.
Push the gray control stick to highlight the grappling hook and then press the "Y," "Z" or "X" button to assign the grappling hook to that button.
Press "Start" to return to the game.
Push the button you assigned the grappling hook to. The game switches to first-person mode and a red dot appears in the middle of the screen.
Move the control stick until the red dot is over the item on which you want to use the grappling hook. If that item is interactive with the grappling hook, the red dot turns into a yellow starburst.
Press the grappling hook button again to launch the grappling hook at the object. You swing from the rope attached to the hook.
Push and hold the "R" button to stop swinging if you need to move up or down on the rope or if you need to change your swinging direction.
Press the control stick up to climb up the rope, down to climb down the rope, or left and right to change the direction of your swing.
Release the "R" button to start swinging again.
Press the "A" button to let go of the rope and jump to your destination.