Gaming Stuck in Yoshi's Story DS! *HELPPLZ*

[[M]artin]

I'm stuck in level 2-8 (final castle in world 2). There's this one area in which there is water and a few shyguys in swimming tubes (the background is night). Further toward the right is the pipe to exit the room but I can't seem to reach it. There's a chomp rock near by (rock you can roll around) but no matter what I try, I can't position it so that it can help me jump to reach the pipe. *Note - There's also a fake flower item monster nearby, for clarification of the area*

Please Help!

EDIT: Typo on the header, meant Yoshi's ISLAND DS... >_