Sometime back i read an article by a major boat yard.
They claimed that by far the boats requiring the least maintenance were ply coated in fibreglass and epoxy resin.
(If I can find the article I'll post it for you to look at.)
If you think about it such a boat is just a glass sandwich boat with a structual core.
Such a boat built correctly will last an awful long time.
This type of boat has the potntial to be a great boat but it all gets down to the competence of the builder as to whether that potential is realised.