how do hunters prepare for another aunt?

Well, this really depends on which hunt that you mean. In the latter hunts the boy's smeared on war paint (berries and such) or their version of camouflage. They had spears with barbs. Sometimes they chanted (kill the Pig/cut its throat/ spill its blood...) and screamed. Frequently they would "play hunt" with a boy to play the animal. This had more sinister implications.