If you are playing tight-agressive the whole tournament, you are missing out on some opportunites, my friend. You can [when the blinds get (relatively) high and the first few people go] steal blinds and build your stack.
I'm an advocate of playing ultra tight when it's 4 handed for just the simple reason that you're on the bubble. Conversely, it's g00t to throw in some moves, steal some blinds and trap people.
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