Too loose

[testaaja]

We are playing some 3-5 players NL HE tournaments with blinds increasing every 20minutes. Everyone but me is so loose that they will call almost anything when the flop comes and they have just 2 over cards (if it's ½ of their stack). Or they will call anything PF. How do I play against these players if I don't catch any cards and go low on chips? I just go all in with some middlesuiteds?
Yesterday I got 500~ left the blinds were 40/80 and I go all in with KK, the player behind me goes all in and button calls (button was chipleader at the time around 2,5kt~ , 5,000t total chips).
Button had 68o and the player behind me J8o. You see where I'm getting right? The payout is winner takes all.
When it gets from 5->3 players I should be a maniac right? But how do I do it with this loose players. I know I have to valuebet very much and I do it. I think I just need to get my chips in PF so I don't need to face tough decisions postflop right?
Advices appreciated, thanks [img]/images/graemlins/crazy.gif[/img]