From my experience of building and repairing polyester/fibreglass canoes
damaged during rock-bashing/ white-water canoeing - polyester patches were
not durable and could be ripped off the damaged canoe, with very little
effort - where as epoxy patches showed much superior adhesion.
Applying polyester over epoxy would result in a useless bond - suggest you
test your proposed method with a small piece of fibreglass/polyester applied
to the stich and glue surface and try removing it after about one week.
I would use epoxy - apart from its superior adhesion and water resistance,
it is not as toxic as polyester - that sweet smell of polyester is cancer
producer whereas the nasty chemical in epoxy is not sufficiently volatile to
be a problem - just prevent skin contact with epoxy.
Where did I acquire this wisdom - building small multihulls using epoxy,
during the previous 17 years - see the Yacht Research Homepage under Project
Windrigger.
Ian Smith


"My news" wrote in message
...
Any advise or comment if I will use polyester and fiber glass on top of
cured and sanded epoxy on stich and glue? My plan is to prime the entire
hull with epoxy for a good bind before the application of
fiberglass/polyester skin.

I want to introduce this idea to the poor fishermen in the Philippines for
economic reason.