Interesting reading but the work load exhausts me.
1. I use MAS 2:1 epoxy. Haven't used pumps since my first boat many years ago. It's just to easy to pour an accurate mix and not have the worry of a reduced flow pump.
2. The last four boats have all been painted with latex. Bottoms, above the water line and interiors. The top line cross matrix paints like Valspar's best and others. Depends on use but a light sand and and a re-coat in 4 or 5 years and it's new again. Dings and scrapes are an easy touch-up.
BUT............ these are not show boats. They fish, crab, and haul a bunch of preteen grandkids. They are in salt water and fresh and are used in peak of summer 60 degree days on the west side and summers 100+ degree days on the east side of the state.
Why do I insist of bright trim work???? I really hate varnish but I love the look.
Cheers.