The cash is typically played online with stack sizes between 20 and 100 BB. As already evident from the analysis conducted thus far, the choice with which a SnG player can try to replicate as closely as possible the situations with which he is most familiar (and avoid the comtempo those who are less accustomed to) is to enter with the stack as small as possible. Assume the star playing with blinds of 0.5 / 1, so that we can refer to pure numbers and simplify the notation.

Imagine that you have a stack of 20, and could face an opponent who raises to 3.5 before the flop. If we decide to call (and we are the only ones to do so), we are on the flop with a stack of 16.5 BB and a plate of 3.5 + 3.5 + 1 + 0.5 = 8.5. We have a stack of less than twice the size of the pot. Any significant stake (more than half of the pot) the two quantities hopelessly unbalanced, ‘binding us’ close to the plate.
If we decide to bid, or to call a bet, it would become difficult to break away from the plate in the next street, the last real decision we take in hand is that flop. If we decide to call instead of raise (eg 10), the proportions become unbalanced on the flop: 10 + 10 + 1.5 = 21.5 when there are only 10 behind. In other words, the only becomes meaningful revival going all-in before the flop.
We see how the small size of the stack alone is sufficient to recreate the situations in the cash with which they are more comfortable with the experts of the Sit and Go

The selection of hands to play with can be done using the same methods and media used to analyze the game of Sit and Go The first step is to assign a realistic range opponent. For this determination may be useful a program like PokerTracker, that after a sufficiently large sample of hands will indicate with sufficient precision the opponent’s vital statistics, from various locations (a detailed discussion of statistics and the corresponding range is beyond the scope of this introduction).

Once you have identified a range of reliable, can be calculated using tools such PokerStove (SnG that all players should know by heart) the relative value that different hands have against that range and then determine which cards to play against that opponent.

This then is the fundamental building block with which the player Sit & Go can approach a game by putting cash to work largely developed the skill playing the advanced stages (10/15 BB) of SnG: open the pot by raising with a range of hands appropriate, and when an opponent enters raising, raising all-in with a calibrated range is also on the opening range of the opponent from where you entered.