at the end of SnGs reads become extremely important, as does blind stealing.

You really need to be able to recognize when someone is tightening the hell up to try and make as much as possible or make it past the bubble, and when someone is spewing like crazy. The first type you blind steal like crazy & get out of the way when they wake up, the second type you've gotta start taking some chances with when it's down to push/fold mode.

Most people fall somewhere in the middle, and some are intelligent enough to have dynamic play. Not many at the $3 level though.

Well-timed aggression is very important at the end of SnGs, but when you get down shorter than 10BBs you've gotta start taking your chances. The proper balance of loose/tight depends on your opponents.