How well it holds up is mainly down to the preparation. The old AF needs to be completely removed, and the hull thoroughly cleaned.
Then the paint needs to go on fairly quick, 3 full coats in one day. And its hard work for who ever gets voted to stir the paint, it really needs to be stirred just about constantly to keep the copper in suspension.
I've seen a few boats with this coating,and it has always looked good, and the owners have been happy. Saw one late last year, the coating had originally been applied 12 years ago and still going good.
You do read about peoples bad experiences, but in many cases, its been a do it yourself job, and the preparation has not been as good as it should have been. One I read about, the owner wiped down the hull with acetone prior to coating. This is specifically warned against in the application guide.
For my boat, 47' fin keel
, estimate 15 liters.
I'm looking at just shy of £1000 for paint alone ($1,600).
I think considering the cost of the coating you may as well the money
and or time on doing the job properly, and have it done by a yard well experienced in the use of this paint, and with a good reputation.The paint supplier can supply this information.
In my case, the job will be done this June, and the work done inside a boat shed.
Oh, and best thrash out some sort of guarantee with whoever is prepping and painting the boat.