Hi guys.
From a detailer point of view, it's not worth it to try to DIY it yourself unless you have the proper tools. For me, I use a rotary buffer machine to buff heavy and severe oxidation. Even then , it takes a few pass to make it crystal clear. Furthermore, i use different lighting source to detect any places that i might have missed.
For end users whom would like to DIY and yet , do not wish to resort to wet sanding (leave it to the professionals with experience), i would recommend to get Meguairs PlastX. Together with an applicator pad, elbow grease and a few passes, i believe you could certainly see a better results compared to relying on wet sanding.
Most important of all, please try to get yourself some plastic sealant to protect the expose and fresh layer of plastic from further UV damage.
Let me know if any of you guys need some assistance. Feel free to PM me too if you need some private advice. Cheers ! :)