Captains Ha! Wait till you have the passengers telling you how to fly the damn thing.
In my illustrious career flying jumpers, I've received a lot of airborne advice. One specific character comes to mind who used to lean over and twiddle the power settings. I have to admit though that he did own the aircraft - and he was my mentor and good friend. Still I just put up a sign that said "Operation of the controls from the rear seat is forbidden - THIS MEANS YOU'
Didn't stop him though.