There are actually a number of episodes Opie doesn't appear in. I think they didn't use him here because Otis is there. Aunt Bee doesn't want to look after Otis , resents it really probably fueling her approach and it wares Otis out and down! Barney's rehabilitation is funny too. Both good methods but Barney might want to avoid giving a prisoner a metal craft set in the future. The escaped moonshiners also ends up at Aunt Bee's for the duration! They are scared of The Rock! I really think this is the best episode for Aunt Bee . We see how she spends her days and how as Andy told her she missed her calling. Imagine Aunt Bee as the warden of the three women in Convicts At Large?!