Interesting. Works in the typical office floor but that has a more solid base than the typical garden. I'd be worried about the 'plots' sinking or tipping.
I wouldn't be in the slightest worried, I would just wait the required 5 minutes until it collapsed and then do the job properly. It might work over concrete or the astroturf pictured, but would echo horribly. A solution to a non-existent problem.
Interesting. Works in the typical office floor but that has a more solid base than the typical garden. I'd be worried about the 'plots' sinking or tipping.