Today's "aero" bug guards don't do that much to prevent bug splatter, they are more of a cosmetic item than anything. They will prevent rock chips to the paint under the deflector (or hide existing chips). If you're worried about the paint being harmed by the little rubber bumpers, just stick them to the deflector instead of the Patriot.
If you want a deflector that will actually work, it will have to be fairly tall, probably tall enough to interfere with your line of sight forward. These used to be fairly common on the 18-wheelers, often being adorned with flourescent "Kilroy" caricature peeping over the edge. Typically about 6" tall, vertical, and 3/4 or more of the width of the windshield. They would have to deflect all of the air over or around the windshield. I used to have one on my Cherokee that worked quite well, although time and miles took their toll, and it broke off somewhere along the highway -- luckily, the pieces didn't break the windshield, although there was some paint scratching. Fuel economy suffered by about 5%.....