You probably know that the red poles can throw you long distances, but did
you know they can heal you? Use the airwalk to position yourself over one
of the poles, then drop straight Down onto it. Each time you do this you will
gain a half of your heart back and one of the segments on the pole will
turn white.
Here's how to bypass the second round boss. As you approach the last
fall before Toady (the second boss), float to the ledge on your Left and
then jump from ledge to ledge until you see the sign that says you've
cleared the round. Be careful, though, you must get the special item
before you leave the level. If you fail to do this, you will have to go back
to the level and find the item, plus you will run into the second round boss!