Hunters considering Unit 42 in Arizona for an OTC mule deer hunt should be aware that licenses are valid for one year from the date of purchase, so planning around year-end hunts may require two permits. This unit is characterized by its expansive desert terrain with lower deer population densities, presenting challenges for spotting game. Hunting strategies might benefit from focusing on glassing from elevated positions, particularly around sunrise and sunset when deer are more active, though a flexible approach is advised given the variable deer activity. Hunters with younger or less experienced participants might consider prioritizing easier access areas and maintaining a comfortable pace to ensure a positive introduction to big game hunting.