Omaha... Do you have to play tight?

I'm sure some of you hate me after reading that title. But I've only played about 2k hands of Omaha in my life, and there aren't *any* books in the local book stores about the game... but it seems like in Omaha you really have to play big draws/Nut hands only... and bluffing is suicide.

I find it hard to play that way though, because I hate having a table image of weak/tight/predictable... although with the weak low limit PLO players they pay you off anyways...

I guess I'm curious for some feedback/insight. And if this post makes your blood boil... sorry. lol