Weeds - Never ending weeds

Yes, it works - it's what I do now I'm not as young, or as fit, as I was
Don't use the cheap spun-bond fleece stuff as it deteriorates very quickly. Buy woven stuff with guide lines woven in eg Yuzet (several other brands available, but that's the one I buy) They're all available in different widths, so it's usually easy to find something to cover bed sizes and there are often offers on ebay. Where it needs to be cut use heat to seal the edges, or it frays like mad - I use a soldering iron bought cheaply just for this.
Oh and don't forget the pins to fix it down or it just blows away. Good luck