those booms from dragons arent that......strong and I have no faith in them for big monolights with big softboxes mounted on it - in the vicinity of 10kg and more
I used something called a Super Boom - cant remember who makes it but I hire it from Silverback Studios in Adelaide, it is a massive boom able to dangle a adult human on it - thus making me feel a lot safer when I have a big 1000ws
light attached to a 5 or 7 foot softbox on it.
maybe send Simon from Silverback Studios an email and ask where he got it from, he told me it was only about 700 bucks or so
that being said, I did buy 2 very cheap and lightweight booms for external flashes and LED panels - cant comment much on it as its not delivered yet, but the link is below
http://www.soldsmart.com.au/l3.aspx?goods=LF0085&cam=14