These guys use freshly cut vines (above) whereas the AJ Hackett imitation involves modern stretchy cord and litigation-proof systems. The main safety feature we saw was the softening of the steep ground where they ‘land’, plus the restriction of the season to coincide with the fresh growth of the vines. Before and after the April to June period, ogeta oli vines I brok. I no gud. Man, I brok nek blong hem. See photo below of the 30 metre high bamboo tower – not for the faint hearted