In some states you can't run the Red or Blue bug shields because they mimic emergency vehicle colors for light bars and stripes.
And at night with lights reflecting off of and through them, they can REALLY look like a cop light bar!
But I have to agree with those that found success with them. I sold them for years, and while I got both positive and negative feedback from customers, I would still say that at least 75% of it was positive. Especially from the owners of the '87-'91 Ford trucks.
First time a guy came back from a trip to Montana and back, and had a thick line of dead bugs at the top 3 inches or so of windshield, he bought several more for his and his friend's rigs. Then, when they'd go round the country towing their horse trailers and whatnot, they were extremely happy.
They stopped recommending them for Jeeps with soft tops though, because the turbulence created over the top would whip the soft top all over the place, and over time, even damage the material.
So any Bronco owner contemplating a bug shield, might be aware of that if they run a soft top.
Paul