Hayes is damn near the best athlete on the team. Defense for him is a side-line which can change under the right circumstance (both Dumars and Hunter were shooters first and then got serious).

More playing time will even out his excessive (mind's eye) offensive game and the assistant coaches need to stress that he can even out tension from some heavy defense. He needs to even out his game and he will lessen his hyper activity which usually ends in excessive fouls. In short, he needs to play off the right distance and get lower on defense. Ironically, by doing this slight degree of change, will add to his offensive style where his body becomes the offensive shield for his deadly jump shot...this opens up more slashing/paint maneuvering.

For gifted athletes, it's all a matter of expanding (most of the time forcefully) outside of your comfort zone. Coaches are paid (in a surreptitious matter) to guide players in these directions.