I found a picture of willow bean poles.
The one has a scarlett runner bean growing on it. You can see how the vine just wraps around the pole.
Left side you can see a trellis for some pole beans that are just getting started climbing. I had two rows of beans and put the poles about 2 feet apart and tied four together at the top. This helps them stand up against the wind. Then I put one horizontal too. Makes a good inexpensive trellis. The poles can be used for several years.
Gardening at 5000 feet elevation, zone 4/5 Northern Utah, Frost free from May 25 to September 8 +/-