I'm happy with my trellises
For years I struggled with that netting that they sell for vertical growing. The hardest part was getting it unraveled from the package! Then some wouldn't hold up well, or get messed up on the trellis over winter.
I use galvanized electrical pipes to form structures that are about 3' wide and 6-7' high. Then I attach some concrete reinforcing mesh to them. Works great and I never have to change it. The mesh is about 6x6", so you can reach through to pick beans on the other side too.
You can buy single panels of this stuff at the big box hardware stores. Good stuff!