[quote=So Boerd]
No verse is truly free. By definition, without any structure, it is prose. Look at Walt Whitman's poems for inspiration on structure. I personally prefer Iambic.But be am a old-ioned .
[/quote]

That's even noted among Free Verse communities. By the time it became accepted, it, too, had a general structure: That it follows the natural flow of speech, in some manner or way. If it sounds unnatural to say it aloud then it's not Free Verse. Beyond that the rules are... Hazy. Though as I said above it's really hard to master, mainly because it's hard to really nail down what it... [i]Is[/i].