GNT! SP Minato Vs Sage Naruto

Well, now we know that Minato's second special j.X is confirmed where he throws a crap load of kunai and starts dashing at them like a mad man. The way they made Sage Naruto really interests me now, because when you run out of chakra, it starts shaking. He doesn't gain chakra by hitting the opponent, or from being hit by the opponent. The only way you can gain full chakra is by summoning a meditating clone on the ground. Which, I think is going to be his d.A. It seems like it would be difficult at times to summon the clone, because you could get punished.