plastic polish

So I have been trying to put some contours and V cut details into my turnings. On any turnings that are straight, its easy to apply CA and everything goes smooth. When there is any shape at all, I usually have to apply the CA in two or three parts and I get overlapping, if I have a small V cut...

three questions on finishing.... 1. What is everyone's favorite plastic polish? and 2. When do you use it? (after 12000 MM as a last step, or after 6000 MM then buff etc....) 3. What do you apply it with/buff it with?