There is a thread about hop propagation using cuttings. http://www.homebrewtalk.com/f92/prop...uttings-68429/
I'm currently trying to do this myself. I shaved a bunch of cuttings on one of their extremity and dipped them in bontone rooting powder. Then I planted them in small paper cups filled with soil.
The cuttings have been in these cups for a week or so and most of them still have the green leaves I left on them. A few others don't look that good though. I've been keeping the soil wet, adding water every day.
I'm hoping something is happening below the surface. Right now I don't see a thing. Next time I think I'll try some transparent media like agar or gelatin to see if roots grow.