Hi

My experience from home tourneys I play are:

1. As the number of players decrease it is much more a matter of stack size and reading the players then your actual cards
2. As the number of player decreases you need to become more and more aggresive
3. When you are short stacked you have to gamble, you cannot let the blinds eat you alive - push all in with any decent hand and hope the cards fall your way
4. Pocket pairs go up in value when you play short handed - 22 for example is a favorite heads up to any non paired hand, Ax and Kx are worth playing, low suited connectors are less valuable then at a full table