Restoring Plastic Windows?

So I ditched my Swiss cheese soft top but kept the doors. The plastic windows are not very clear.
Anybody had any success bringing them back to a better state?
I have a plastic polish called Novus2 that I used to use on telephones. I may give it a try this weekend unless I hear better from you guys.

 

Toothpaste.
This is the green crest with scope.

 

I have used Novus with decent success. There are technically 3 grades, but #2 is the most useful. #3 is more coarse for very heavy scratches and #1 is more of a protectant but I'm not sure that it does much.

 

Make sure you use your wife's old extra gentle toothbrush...

 

I use lemon pledge on my plastic windows. might not be the best for restoring real bad ones, but it seems to do a great job at maintaining (once a month or so) and cleaning ones that are in decent condition.

 

I had great experience with the 3-step Novus kit. Got a polishing ball for my power drill and took my time with it. Removed some pretty significant worn areas and the windows look basically new again. My windows weren’t in bad shape but I do see a clear difference now

 

X3 on the Novus

 

I used Novus2 and it turned out pretty good.
I can’t say restored but I think my plastic is probably beyond restoration. Definitely a lot clearer! Could probably come out even better if I went the way SweetPea did but I can use them now if I want (mostly roll without doors anyway).
Thanks for your replies!

 

If you can find this:

 

I have used Meguiars Mirror Glaze plastic polish and cleaner with some success. There may be better options now.