So the kit come with 4 stages on a orbital buffing pad that you hook up to a battery drill
500 grit then 800, then 3000 and last the compound.

I had some 1000 grit laying around so I added that to the process in between the 800 and 3000. The trick to get the best results is in the first step. Make sure you get a good even haze on the entire lens. Then just do the same for the reminding steps.

To seal the lens you can wax them, but I just used some spray wax for now temporarily as I am going to add a Lamin-x layer to keep them from going yellow again