Buffing BUT use care!
The companion way plexiglass was badly scratched on my h23 when I got it. I used an orbital buffer (car polisher) and microglaze buffing compound. It did a great job on the minor surface scratches and helped on the deep ones.Here is the caution. Use a CLEAN wool buffing cover (any dirt particles will scratch as you buff)Buffing compounds will not return the surface to "like new" condition. Mine ended up with a very faint haze. You could still see through it fine, but didn't look like a new one.Go over the entire area equally so you don't have uneven spots.Micro glaze compound can be purchased at automotive stores. It is used for minor scratch removal on clear coat car finishesGood Luck and if you mess it up too bad you can always replace it (smile)