The previous owner of our C had a bug shield. It wore holes in the paint where they had bumpers between the shield and hood. When we purchased it, it had no shield, nor will I add one. I've had plastic shields on vehicles in the past, and have had a number of issues with them:
o washer fluid doesn't reach windshield when at highway speeds
o debris gets trapped between shield and hood
o rust/rot in holes in underside of hood where screws hold the shield
A stainless shield would make sense if there was no gap between the hood and shield, but then it probably wouldn't have the kicker at the top edge.
Ford hoods are plastic/fiber anyway, so they won't rust even if the paint is chipped.
We clean the bugs off with purple power or any good cleaner, then give it a coat of wax now and again. It works for us.
2016 Forest River Sunseeker 2250SLEC Chevrolet 6.0L