The first time I used Collinite was after I had compounded then polished fiberglass gelcoat to remove some oxidation and neglect. I had heard great things about Collinite and planned to use it as the last step on this 3 step (compound/polish/wax) gelcoat restoration. I did not realize the wax is...
True. Collinite 845 is a terrific wax that's been around a long time. In the northeast, two coats will get you a couple of months of protection if not constantly being beaten on by gas station car washes. In nicer, dryer climates it will last longer.
When you used Collinite, did you heat it up...
So, you would be using TW SnS as a topper.
Typically, you want the longest lasting product as the base layer and the shortest lasting product as the "sacrificial" topper.
Polymer based products will far (by months) outlast carnauba or any other natural wax. So, for your best combination...