:smthumbupWhen I used to own a valeting firm, we often tidied up caravans, and the polycarbonate windows on them scratch very easily, but that also means they clean easily.
We used a couple of products.
One is called Xerapol, this is good, but don't used an orbital polisher or polishing mop on a drill as you will scratch it even mire.
The other thing we used is jewellers rouge, which is a cutting paste.
This company is used by the RAF and Navy
They do a plastic polish paste :smthumbup
I have my uses :mhihi::smthumbup