I am doing the Mittleider Gardening method. One of the things I'm doing is the vertical gardening using the Mittleider T-Frames trellis system (see my post on the T-Frames: https://steemit.com/garden/@florio/garden-trellis-system-that-is-amazing ).
One thing to consider is what twine to use. I highly recommend using the 170# bailing twine.
This twine will not cut into the plants and damage them. If you get some nylon string or rope, over time the plants will get damaged by their own weight cutting into the string. Don't go to all the effort of growing your plants to see them die right as they are setting their fruit!