Best paint for topside

[oldharry]

These two statements appear contradictory?

I knew someone who painted his Westerly with two pack paint and it was holding up pretty well 18 years later. He did keep that boat in a shed every winter which likely helped. But it was a dark blue gloss which is generally quite unforgiving compared to white.

I think the quality of the paint is hugely important.

No contradiction - that hull already had several dozen paint coats slapped on by successive owners, and of completely unknown quality. Cant have been too bad because it wasn't lifting anywhere.

Paint quality is all for a durable finish.