Go back to the east and then south to the corner of the wooden building.
You can't go up the ramp at this point and Sora will turn back automatically
if you try. When you get near the corner, the screen will shake.
Climb up the new blocks and onto the ledge. There is a prize block containing
one Power Dust. Next, run south down the deck, the only way you can go, to find
Tidus on the smaller island. The conversation starts automatically when you get
close to him.
