blistering

A surprise awaited us a month ago when we hauled the boat after three years in the water. A whole bunch of small blisters were on the hull below the waterline. More appeared as the days passed and even as the light changed while I worked on sanding and "picking" at them to get to epoxy that...

I have heard that blistering on Ericson 26's is very common. I was wondering if that is the experience of owners? I was looking at a 1988 model, and it had many. It had been in salt water for all but the last four years. The owner claims it never had any before.