you can get acrylic scratch kits and yes you can give them a quick polish but be very careful it tends to want to grab allot so go slow and soft. I would go and get a scratch kit there is 2 creams that should come with it 1 for buffing the scratches and the other is for finishing and cleaning. then take some water and rinse it off. should be as good as new.

A buffer works wonder I have seen tanks that have been buffed it is amazing but as I said before you have to be extra careful.

Bill