dummies. :shifty:

wetsand 1000 1500 then 2000 then buff them just like paint on a car. Will be 10 on a ten scale.. will be as good as new.. will be PERFECT again.
You can't just sand them. You can't just rub them with rubbing compound. Take them OUT OF THE CAR and buff the hell out of them after 1000 1500 and 2000. Keep your paper SOAKED while you wetsand.
If you don't have a buffer a body shop will do it.
If you don't want to do that then clear coat them. Make sure 2000 is the last grit you use and get out ALL the 1000 and 1500 grit scratches before buff or clearcoat.
I've done this MANY times.