Once you get 30 shines, the evil guy will show up in the main area with the Rocket Nozzel. Chase him around, he follows a set loop and you can make him reverse it if you want him to. You might have to spray him "normally" (without Y) to finish him off. When you do, you can now use the rocket nozzel!

Switch to using it with X, then super charge it by holding down Z until you blast up into the air!

Town Rocket Nozzel Notes:
* Behind giant shine, clean it off and then zoom to the top of it to get the shine


Super Mario Sunshine Walkthrough