If any of you get to Iguazu falls (HIGHLY recommended) there was a privately owned cub there, which could be available for tours. Enquiries at the town pharmacist (something like: - "yes I'd like some toothpaste, plasters, condoms {whisper} oh, and do you do flights in a cub
"). I didn't get time, but I think it would have been amoung my most memorable flights. The 10 min hop in a heli just wouldn't have done it for me.