Your on the right track Groebuck. Basically with wetsanding you are leveling the area around the scratch to make the appearance less. If the scratch is only Clearcoat deep, it can be removed. I wouldn't suggest, per se, that you are "hiding" the scratch. When it comes to bare metal, it is recommended applying touch up paint, and then wetsanding it down to conform with the rest of the surrounding area.
The main thing about a scratch is that is has sharp edges, which light refracts off of. This is why we see it so much, so dulling the edges is a good start (PC and sometimes by hand), and then leveling off (Rotary and sometimes wetsanding)
The Rotary comes into play to get rid of the marring left behind from the wetsanding, and thus, brings back that shine. I used the PC after the rotary just because it was easier (at this point in time) and lighter to work with to get around all the obstacles.
Hope this puts you on the right track!
