Working holiday visa or permanent?

Well, I've heard it's tough to get sponsered, so I looked into permanent visas and well, I just can't afford it. What are the chances of obtaining a professional job while on a working holiday visa? I've never been to Australia, so I don't want to spend that much money on a permanent visa if I might not even like it there. With a working holiday visa, even if it wasn't for me, I could come back without so much money lost. I realize I can't work in one place for more than 6 months, which is why I'm skeptical about getting a job in my profession (civil drafting). Does anybody have some insight to share on this?