Fukuda is a really horrible coach. The way he drops people to their lowest point and expect them to pick themselves up. He gives them zero instructions. I mean do you toss someone into the deep-end and expect them to be able to swim without drowning. If Hana wasn't around to pick him up, Aoi would be lost forever.
Nozomi is a proper coach because he "understands" the players, he gives enough instruction for the players to figure out stuff themselves.
EDIT: And pretty sure, we established that Aoi isn't the smartest tool in the shed.