The first time I used the rear sprayer I thought that it was broken, but have gotten used to it since. It seems to work ok if done correctly. A mist or some such spray method would probably be better but I don't think it's dealer worthy.
ya i think if it misted it would blow away. im totally content with mine. im not content with the front though cuz there is a spot on the bottom in the middle of the front windshield that i cant get clean unless i use a crazy amount of windshield washer fluid.