From the ArcaMax Publishing, Gardening Newsletter:
http://www.arcamax.com/news/gardening/s-156713-428052
Question: What is the best way to support my pole beans? I have been
using twine but it is tedious to string each spring and must be
replaced each year.
Answer: Some gardeners use heavy wire instead of twine, some use the
premade string trellis netting, others use several poles lashed
together teepee style, still others have used makeshift supports such
as a large mesh "cattle panel" attached to sturdy posts. It's really a
matter of personal preference and what is available.