I use an outdoor Carcoon which has been very good.
I've been very impressed with its performance and, although it is partly protected by outbuildings, it has withstood really strong blustery winds and the vehicle remains safe inside.
The vehicle inside has remained perfectly dry and there is also a zipped vent if you wish to dry a damp vehicle.
The only hassle is due to its frameless constructio you need to allow the cover to deflate onto the car before you can uncover it... not a problem, perhaps use a cotton cover if you are concerned above damaging the paintwork?
(still better than the damage that a collapsing frame could do if there was one?!)
I have no connection to the manufacturer of the Carcoons.
Mark.