Bike Home Motorbike Covers Bikehome UK Ive got one of these, had it for over a year & all good mate. anchored it to the ground with the bolts provided, very stable & waterproof.
I've been through quite a few bike covers, got myself a robust geargremlin cover. 1100cc size' Motorcycle Cover
There are some useful threads about building sheds, garages, dildo making, timber houses, insulation and a little about vegetables. You do what you wanna do.
Please don't mess with the thread... I was reading about bike covers then it goes all like I've doubled my meds!
also been through many, currently using :- Premium Motorcycle Cover - Extra Large (1200cc plus) and happy with it. With longevity in mind a good cover should cost at least £50 and the weight of it ought to give you a clue (although they all seem reluctant to declare this). Don't go near an Oxford 'Rainex' - I have had lightweight covers at 2/5ths the price last longer.
Edited for accuracy. I haven't bought a single Oxford item ever since "disc lock-gate" about 10 years ago, when it was discovered you could open the Oxford ones with a biro. I know they weren't the only ones caught out by that, but I just think their stuff is generally overpriced, not very good quality and I hate the way almost everything they sell has their dated looking namebland plastered all over it in massive letters.