I had one on mine for a bit but it was a bit of a pain. The one from Scooby world. It has one strap underneath which is not really enough. It blew off. The fit was good an not too heavy. I haven't used it that much but maybe an option would be to fit two so the one underneath does not move as much + you get better weather protection. I kind of think money spent on a good paint protection may be better, but you get so much carp from the roads these days. I was thinking about some kind of gazebo thing with Perspex in it on the drive, not sure it would work on my drive though.
http://scoobyworld.co.uk/catalog/pro...oducts_id=1302