I've finished in the money the last 16 out of 20 SnGs i've played (some were heads up), and i noticed a pattern in losses and wins. Correct me if i'm wrong.
When you are in the bubble, but especially when you are in the money, the first to lose aggression usually finishes last. I learned how to play short handed game and heads up from Ripptyde. It took me a while to take full advantage of Ripp's style, but it's worked wonders eversince i managed to put it to work. Getting in the bubble, playing when in the bubble, getting in the money, playing when in the money, i had plenty of help from many other's here at FTR. After all, you have to get in the bubble at least, to be talking about short handed play. But as far as short handed and heads up plays are concerned, Ripp's style really suits me.
Everyone's got their own style and strat, but i believe aggression is the key ingredient when short handed.
I understand that there's more to playing short handed, but no books or change of gameplan made me a better short handed player until i learned aggression.