Woven rovings and mats will add thickness (and weight) but not as much strength. Using biaxial fabrics you can add much more strength without the added thickenss and weight of conventional fabrics. The softer and fuzzier the mat, the less binder it has, which means it should work better with epoxy. Assuming you can even find "fluffy" mat with less binder made for polyester don't use it. It gives a dry, weak layup.
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
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