Anyone have these on their i? If so, can you tell how much airflow, if any, there is into the cabin when the windows are rolled down slightly but not lower than the bottom edge of the deflectors? Also, how well do they work with keeping rain out of the cabin when you have your windows cracked? I'm considering getting these because I love driving with my windows down for the fresh air, but my daughter HATES having the windows down. I'm wondering if the deflectors would be a good compromise: fresh air for me without daughter's hair getting blown all around?