I have built two kayaks with that cloth, re-skinned a third, and will continue to use it. It should produce a lighter weight lay-up for you than open weave cloth, but more importantly to me it produces a kayak that better stands up to the barnacles, rocks, and other hard knocks my kayaks encounter. Here's the catch. You must use a very thin resin, have a warm shop, and use good technique. My resin of choice is System Three Clear Coat. Raka, MAS, Silvertip and the other common hand lay-up resins are too thick and will give poorer cosmetic results. The problem is that tight weave cloth of this weight hangs on to micro-bubbles which are hard if not impossible to work out, whether it is "S" glass or not. Because the weave is so tight the typical ghosting one sees on close inspection (due to slight differences in the coefficients of refraction) is not apparent like it is in the open weave s-glass types. BTW, I see it repeated often that s-glass does not wet-out well. Personally I see no difference. Once the fabric is wet out I use whatever I have around for fill, usually MAS. It takes more effort but I achieve very good cosmetic results that compare well with others using open weave fabrics.

There are more photos of this boat at http://www.metakrome.com/kayak/king.html

Ted

: 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?