I just painted my 30 foot cat with rustoleum marine
white gloss. I prepped with 80 grit, then filler in some gouges and another 80 grit. Cleaned the hull
clean. Then rolled with a small roller. Let it dry for a few days then a fast wet sand with 220 grit. another wash and dry then next coat. It looks pretty dam good. I didnt need perfection I just needed it to look good. Paint
cost 30 bucks and I have significant left overs.
I had tested the paint on my cabin
top of my big boat about a year ago. And after about a year in the florida
sun, other that it needing washing
its holding up pretty good.. Now on My big boat Ill use the interlux
below the rub rail and the rustoleum above the rail mainly because I can touch up quickly and inexpensively. I went with that on the small boat for ease of maintenance
. Its just easier and if washed and touched up it should hold for quite a while. As the paint gets older Ill update my opinion of the paint.