Wayland did it at a meet a few years ago.
well pegged down a frames . seemed to work ok.
Why am I not surprised that Wayland pulled it off!
I can't imagine...

I had almost forgotten about that Graham,

I used an A frame made of 3"x 2" at each end and anchored them with three steel pegs at one end and a ridge-line running over the top to a tree root at the other.
It was quite secure even when the ground was soaked.