PPF care with OPTiX
Optix final boost is great for wet washing to create the hydrophobic effect of your PPF to increase the hydrophobic effects and shine considerably. There's no need for coating it like paint. Crystallising coatings tend to break down too fast on PPF. There only reason your film actually needs coating is when it is of lesser quality apart from the PPF just needing a nice hydrophobic surface.
Pink stuff is best for dusting or waterless washing on PPF
Optix Nano or Optix #NINE is more about being the products that you would use to replace traditional waxing. Unlike waxing OPTiX #NINE and NANO will not fill edges up with white clumping thick residue.