Originally Posted by wind_magic
The person at the store has 30+ years experience. It is a specialty automotive paint store, not Autozone.
Another reason I believe the catalyst might be optional is because the paint could be put into an aerosol can at the store, and of course it isn't possible to put the catalyst in the aerosol too without activating it.
Like i said, what does the manufacturer recommend?
Seriously the manufacturers spend millions a year designing, testing, and evaluating coatings. Then they print labels, books, and users guides to explain how to get the best out of their products.
Why would you post a general question on a sailing forum about automotive paint, not include the name brand or type, and expect a better answer than what the manufacturer has created at great expense?