An obstacle course perhaps. Set up so that none of them can succeed alone but together they can complete it. (Naruto would presumably not have the Kage Bushin yet since the Mizuki plotline would be at least delayed) And up against a time limit. Last to complete it goes back to the academy.
Of course, they all get stuck somewhere in the course first time around -although possibly doing better than Gai expects. Cue over-emotional reaction from Gai.
D for Drakensis
You're only young once, but immaturity is forever.
Of course, they all get stuck somewhere in the course first time around -although possibly doing better than Gai expects. Cue over-emotional reaction from Gai.
D for Drakensis
You're only young once, but immaturity is forever.