Rubberized Undercoat

I had my rear fender primed and I decided to use some rubberized undercoating on the underside of it.  I thought it might look good and protect it since I have a bad habit of riding down gravel roads.

I taped off the outside of the fender and proceeded to spray away.  This is it before the spray:

This stuff has a strong odor.  It was also kind of messy.  I hope I don't regret my decision to use it.

Here's a pic after spraying: