I finally found it!!! I was saying that Luffy could take a page out of Kirby's book if he could launch himself high up in the air with the cannons. Well I was reminded of that because Luffy used Gomu Gomu no Balloon to get off that cloud after beating Eneru.
link to msn page: http://groups.msn.com/OnePieceMangav-3/volume32.msnw?action=ShowPhoto&PhotoID=6065
haha even tho he'll probably just use that boat