Board Thread:Theories and Speculation/@comment-25093611-20160304230401/@comment-9782468-20160311055748

@TheOneWhoLovesNaruto, no. he was kicking air. Like, kicking it fast enough that it gave him thrust. It wasn't due to chakra.

Which is basically saying that even with all that power, it made more sense to kick the air rather than use chakra to stand on it.