1.

The Temple of the Ocean King is revisited multiple times — memorize the layout.

2.

Phantom Hourglass Sand extends your time in the Ocean King temple — collect it from bosses.

3.

Draw map notes with the stylus to track bomb-able walls and secrets.

4.

The Hammer is essential for many puzzles — don't rush past it in the Temple of Ice.

5.

Ship parts can be traded with other players via local wireless — some parts are rare.