It's been a long discussion over the years, why one boat blisters and others dont. Obviously no one has the answer, (except Valiant with their fire retardant resin issue!) Suprisingly , I've seen a lot of rock solid, blister free taiwanese boats, built back in the 80's, even with their crude layup
skills. I suppose a few minor blisters are inevitable, but some boats seem to be saturated.
As far as modern methods are concerned, my understanding is vacuum molded hulls actually have less resin. maybe it's better distributed though...? In the old days seems like it was real resin heavy.