Brooke,
I think you are giving the Mannions too much credit. They were lucky plain and simple to buy in early 2003 before a huge jump in prices. All their appreciation came in the first 12 months and had they waited even a month or two their return would have been dramtically smaller. Timing any market is extraordinarily difficult and they got lucky. The thing they deserve credit for is acting on Rich’s advice to sell at the peak. That’s all.