Oh, and about Yoshi, after you use the first Cheep-Cheeps, get to that platform, and then jump to the left so you get to that little place with the tree on it. Eat some fruit from that tree, then go back to the platform you were standing on, then squirt the next Cheep-Cheep, and now it should go upwards instead of sideways. Then, go to looking around mode and aim Yoshi at the yellow junk and squirt. There. Now that that stuff is gone, leave Yoshi on a platform, go get the Rocket Nozzle, swim to right under the next-to-last platform (or the one before that), rocket up so you grab that platform, and use successive Rocket blasts to keep getting to the next platform, then, finally, you should get to the Shine. Pound on the fence, and you've got it!