Sorry for the late reply…
I have the 6M version, bought some years ago with the aluminum stake and the bungees, it was the aluminum stake and bungees that I left on top of Ros Hill.
The bungees seemed to have lost their elasticity over the years and, as has been said, the single stake was a bit flimsy for anything more than light winds. It was also difficult, in my experience, to attach the pole to the stake and wrap the bungees without the pole falling over.
So, I’m looking at alternative ways of holding the pole up and I’m also thinking of replacing the “Balun” as well, as the single long ground wire and “Balun” seemed to be a bit of a compromise in my opinion.
The problem is that it is difficult to work out what sort of loading coil to use… There’s the tapped coil, where the feeder is tapped up a few turns and a shorting tap is used from the top of the coil, but according to the experts, that’s not very efficient although will work on a number of bands, or an alternative to make various single coils to put into the base for a variety of bands, but again 6M isn’t a good place to start for a single band vertical.