How bad is the scratches? Can your fingernail grab it? If so you probably won't be able to get them out.
It doesn't matter if it's single stage or base/clear. Here's how to remove scratches. If it doesn't come out with just compound try 2000 if that doesn't get it out go with 1000. If it doesn't do it go with 800. Once it is out sand it the other way 800, then 1000,1500,2000 then compound, polish, hand polish.
You said it's your tow rig? Vehicles nowadays are painted with base/clear so you will hardly have any clear on it. Sometimes when I prep a blend panel I seem to be able to grey scuff thru the clear. Be carefull sanding too much off. (all sanding above is done wet with wet/dry sandpaper BTW)
I use 3M Extra cut with wool pad and their polish in a black bottle with a polishing pad and Meguires #7 for a hand polish. If you need numbers let me know.