Is it wrong to wait to see what happens to the short stack before you start risking all your chips? The short stack only has 5-6 BB. Even if he doubles up, you would still have a slight chip lead over him. If the short stack busts or doubles up from the other middle stack, you're good for the money. On the bubble, I like to see that at least one of the bigger stacks is pressuring the short stack in his blinds.