the main reason to raise is so when you hit the flop you can bet a lot - in my opinion. Not really value raising like in holdem.

Very coordinated double suited hands are a good candidate. and any AAxx that is double suited.

Some times you can thin the field too, but not usually. Later in the tourney I wouldn't do a lot of raising becuase the blinds will be so big compared to your stack anyway, unless the table is playing tight.

Trons stole a lot of pots in his big PLO win.

where do you play this tourney?