If you're looking for an inexpensive, fully waterproof cover for your bike, then check out the Tourmaster PVC Motorcycle Covers. Available in 2 sizes to fit your motorcycle, it will keep you bike dry and protected.
Tourmaster PVC Motorcycle Covers details:
Heavy duty PVC construction protects the motorcycle from the elements
High frequency welded seams
Fits most bikes
Includes grommets in the hem that can accommodate a locking device
Stuff bag included