My tournament style can be described as very tight-aggressive early in a tournament or SNG and I noticed one thing in the past few games that has saved me a lot of chips: not being tempted by weak aces. In any position but the cutoff, button, or blinds, I’ll mucked A10o and worse.
With hands like AJs and AQo I like to put in a defensive raise, see where I’m at in the hand. If I’m reraised I’m likely to lay the hand down right there, there is just no reason to get involved in pots, especially early in tournaments, when you could be in serious trouble.
As I wrote that last paragraph I folded A7o and A3o in a SNG and the hands that went to showdown were A9s and AJo, after the case ace flopped. The guy with A9s bet out, was raised, and check-called the rest of the hand for half of his chips, ouch.
This isn’t only a good idea for early in a tournament but throughout the tournament. The percentage of hands and times you’re dominated don’t change as the blinds increase, and people usually tighten up as well, so anytime you see two to three early position limpers dont’ be tempted with your Ace-five suited, you’re probably in a lot of trouble.