We are all human, all prone to make mistakes and if the fields at which I fly are any indication, not getting any younger. I know that sooner or later, for one reason or another (as in "I can fly under that ribbon inverted") I am going to lose my planes because it's not much fun to just circle the field. Therefore; Rule No. One...Never put in the air more than you can afford to lose, then go have a good time.