Board Thread:Versus Debates/@comment-30830650-20170116074632/@comment-9782468-20170120045949

I repeat, Nature Energy not usable as Sage Chakra. Sure, Nature Energy is used in Frog Kata, Frog Kata is only available in Sage Mode. Which is unavailable if Jiraiya runs out of normal chakra.

As far as your clone scenario goes, that might've worked if Naruto couldn't just make over 10 clones for every one of Jiraiya's. I doubt Naruto would let a clone of Jiraiya's sit calmly to gather the necessary chakra. Even if Jiraiya hides his clone, Sasuke has the Sharingan, which sees chakra through walls/rocks. Sasuke would notice and either put an end to it himself or let Naruto know. I don't think making infinite sage chakra is viable option in this fight.