My main problem with fairing the'32 has been getting the shape right, the convex shapes like the bottom of the hull are ok, its the concave shapes just above the waterline that are a pig.
i have sand paper tacked to all sorts of bendy boards/strips of pvc.
I was very worried about the amount of pinholes that showed up when my mate went over the hull with an airline before we started to paint on saturday. Not too much of an issue, because i am using awlgrip paints, once you have a coat of bullet-proof 545 primer on there, you can go over the hull with the awlfair filler and a scraper and the holles fill in really well. The awlfair is much less fluffy then the microlight and fills small bits better.