As well, there's latex bottom paints which may or may not resist growth but last from the paint perspective. Also, the deck/nonskid will be latex Kiwi Grip.
I just thought to paint the bottom with an oil based 'tie coat' as there was a primer on it from the numbnuts who built the hull. Even though he failed to sand it first....... Having sanded it, it's ready for paint if only I was.