Question for Cat Man Do:
You seem down on polyester resins. Are isophthalic polyester resins better, or are all polyester resins used in the marine
industry isophthalic anyway. FP has used isophthalic resins for years, and says their boats do not need barrier coats (now called primer coats by nervous yards) below the waterline and/or under bottom paints, as they are much less susceptible to osmosis
than the regular polyester resins. How does isophthalic compare with vinylester?