In SnGs and tourneys I play extremely tight untill 1/2 the field is gone. You miss out on chips for the first 1/2 of the game but believe me. you wont get pissed off because you got got drawn out by some newb or loose player.

Each time I've used this strategy in a tourney I've made it to the final 100. A couple of times i've even set it on auto-fold for the first 45 minutes and each time i went from last in chips on the table to chip leader of the whole tourney.