I have and do use it. It works great. I helped Jay Glaser put it on the first 505 sails he tried it on. It really makes a difference just after the application you can feel the difference. The question was whether it lasted. We applied it to one of my sails at the same time. I am sure that the application I put on months ago is still good. It brought an old silicone cloth sail back to life for a good while. That has since turned into my practice spinnaker but still slicker than when it initially died.

I believe that you can not longer buy silicone impregnated cloth because of this stuff.

Application:
You apply it on a slightly sunny day. They recommend that you do not do it on a really hot day or on a cloudy or damp day. After mixing the two agents we applied it with a sponge. The spinnakers strung up off the ground. We used gloves...it seemed like a good idea. Do not apply in any place that you will be walking later, it will be like walking on ice, and I do not think it is good for the grass. We applied it over an asphalt surface and put some flattened out boxes underneath for the dripping that may occur. It will go on a bit cloudy looking but clear up when it it dry. Do one side then flip the sail over and do the other before it dries. You only get so much time to get it all on. Seems that it was 45 minutes or so. You will be able to do two spinnakers on that time.

I think the sail kit is about $40 and will do two of our F18 spinnakers. This is good so you can do it with a friend. It is much easier if one is the sponger and the other is the holder and stretcher of the cloth.

Later,
Dan