Hi all, I've just bought one of [[http://www.ebay.co.uk/itm/XLarge-Rabbit-Hutch-Run-Guinea-Pig-Ferrets-Hutch-run-R4-02-/150938583281?pt=UK_Pet_Supplies_Small_Animals&hash=item2324a400f1 these]] but wonder if it could blow over in the wind? I'd want to move it around the garden (hoping I won't have to mow the lawn this year!). Do you weigh/tie your's down in any way? Thanks