Edward Storer (a founding father of Imagism as a genre) wrote in his 1916 New Republic article ' Form in Free Verse'...
Everyman's free verse is different
If you write 'free verse' do you agree with Storer
or what 'rules ' or technique do you follow ***
How do you ensure some reading ( or reciting for that matter) follows your conception or is this irrelevant to you ?
If you don't write free verse why is this ?
UPDATE A
Storer made war on all poetic conventions . . . and [for him] the soul of poetry was the vers libre *–heroic blank verse cut up and phrased according to the flow of the emotion
*Vers libre was the French fore runner of what later in the English speaking world became known as Free verse.
UPDATE B ***
Some of the rules/techniques mentioned in comments 11pm GMT 24th:
punctation/spaces/hyphens/emdash/ellipses/pause/enjambment/ stanza break/ line breaks/capitalisation/formatting
Others (from my 2013 kindle study guides 'Free Verse-the genre. An Appraisal')that I would add to these 'rules' are:
natural speech rhythm(the essence perhaps of the form ) plus. indentation as punctuation/pauses implied by syntax/metre replaced by cadence in rhythm
UPDATE C
This is how PS defines Free Verse in link above
...recognizable as 'poetry' by virtue of complex patterns of one sort or another that readers can perceive to be part of a coherent whole.
UPDATE D perhaps I'll leave the final observation to
Yvors Winters ,a poet and a critic of free verse considered" the only 'norm' was perpetual variation"