The problem with using plastic ties is that once they bake in the sun and become brittle they snap. Or the slightest pressure and they break, so as far as secure they are NOT for any length of time or longevity.
My run is 6' tall. (I am 5'5") I stood on a cinder block--kicking it over as I worked my way around. I was working over my head. But using the hammer was much easier for me than using a staple gun would have been in that position.
If you have the proper tools (a good quality staple gun and a ladder, for example) you may do much better doing a different way. I'm a make-do type, though. I couldn't see buying an $80 ladder when I had a perfectly good concrete block laying around!
Though I know people who will buy a $500 tool to build a device that's going to save them $20. (shrug)
We used Nob-staples. They look like poultry staples but are thicker and a third of the price at the local hardware store. They're sold in the electrical department.
We also used the wire that the roll of cloth is wrapped in to connect the panels.