Thayercraft Style 6580 - 5.7oz Has anyone used this glass? I bought some to use on the inside of my Petrel and am getting close to doing the layup. It is a 72x72 S Glass, verry smooth simular to the 6116. I used two layers of 6116 on the outside of the hull, and one layer on the deck with good results. My concern is, is the smooth textured glass stronger, weaker, or the same? I was going with this glass beacuse it is S glass and takes less resin to fill the weave. Any thoughts?