My 68 convertible has a pretty hazy plastic window. I'ver tried the plastic polish and cleaner that was recommended in a resto book, but I saw little improvement. Anyone have any suggestions short of a new window?

I should have been more specific. I used Maguiar's clear plastic polish and Maguiar's clear plastic cleaner (# 10 & 17). But, how much elbow grease will this require? Would it hurt to use a power buffer wheel?

Winch, I have used a product from "The Wax Shop" called "Safe-Cut". It does require some elbow grease (by hand) and a few applications, but it will take out haze and minor scratches.

Hi there I have had good luck using a machine to buff out scratches on plastic windows, low rpms and a fine compound then going to a plastic polish has worked fine for me.