Quote Originally Posted by yudalicious
did you polish by hand? if you coat it water does it get clear and go to opaque when the water dries? that means you haven't polished it enough.
I usually use around 1000 grit then 1500 and wet sand the lens by hand. after that you need to use a rubbing compound. I've tried several diff ones but the best I've found was 3M's rubbing compound, designed specifically for polishing 2000+ grit sandpaper jobs. I found it at pepboys about $10 for a bottle that'll last you a long time. now w/ the rubbing compound it takes forever to actually polish it to clear, if you have a drimmel that may work very well; I used a drill with a wal mart bought attachment with polishing cloth. But be very careful w/ drills, be very light with them when polishing. the end result was very good, I followed it up with some plastic cleaner/polisher. You can toy with finishing it off w/some sort of clear coat or wax.
You'll need to resand after several months if you park your car out in the sun, but like I said the $10 bottle lasts a while (good stuff) and the whole process can be done in under 30 minutes. gl.

very well said