My sister had her car windows smashed and purse stolen when she was parked at a trail head in a city park. The cop that responded to her call stated that this happens all the time. Sleaze bags are watching these areas and know that a woman NEVER goes anywhere without her purse. If a women leaves her car for a walk and doesn't have her purse with her the dirt bags know it is in the car.
I have had good luck with PIAA Silicone. Mark me down as a fanboy for Aquapel, it lasts 3 or 4 times as long as Rain X and doesn't smear when it wears out. With a good coat of Aquapel on your windshield you can get by with just about any wiper blade.