i used carpro cquartz 3.0 and it was super easy to use, did 2 coats and a topper of carpro gliss
since then i removed it all and wrapped my car, again used carpro skin to coat the vinyl
i've also used carpro cquartz lite on my FILs truck, about a year later its still decent, starting to wear but he barley takes care of the truck so not bad all things considered