I hope you don't think I'm being a bit thick here :-[, but I've just inherited an elderly aluminium greenhouse on my new plot, and I'm unsure how to tether it to the ground!. It is erected but unglazed, we have some glass stacked beside it, but the is no base, or brick layer or anything; I don't think the previous owners ever got around to using it. Can someone please advise what is the best way on ensuring it doesn't get blown away in the next strong breeze?!