Furthermore if you want the sensation of a jet pack, there’s the jet lev, which seems much safer. The article mentions that this should only be flown over water on a tether, so what’s the benefit over a jetlev?
That's like the Flyboard, another water-jet system.[1] That's the world champion flying.
The Flyboard people now have the Flyboard Air.[2] This is a real flying hoverboard, powered by what is believed to be a group of model aircraft jet engines. It's not easy to fly. They require 50-100 hours in the water-powered version before attempting the jet-powered version.
It's very cool, but it's for people who find skateboarding stunts too easy.
https://m.youtube.com/watch?v=s00SwPZ_1D0