undercoat

I Drive me Jeep hard and Enjoy the Rocks. Needless to say my undercarriage is taking a beating. How do you spot treat undercarriage damage to Prevent Rust? How do you remove the rust that has already show up? How do you Smooth out the Burrs? What do you use to prevent rust?

Has anyone gotten the Mopar Rust Inhibitor, Undercoat, & Paint Sealant applied to their Jeep? I just picked up my JLR yesterday and this was the first time that I was made aware of Mopar offering something like this. I find it a bit far-fetched that only 1 application is needed and then...