I have successfully used this simple swage tool, up to 5mm round hole:
www.bunnings.com.au/kincrome-600mm-swaging-tool-with-wire-cutter_p5520067to do my inner stays. I have rope for my safety lines, out of convenience only. I use 5mm galvanised wire for my inner rigging (7x7 construction). Swaging is simple and reliable, cost-effective too.