It didn't work as advertised. I followed the directions, cleared the area and sanded my boat fine. Full of anticipation I took the patch out of the packaging and looked forward to repairing the kayak. The patch was quite stiff and didn't fit the contour of the boat. I've tried over and over again and managed to tape or tape it to the counter. It was too hard. I'm not sure if it was defective or what. I expected something soft to follow the outline of the kayak. It never got stuck. I didn't even make it to the "let it dry in the sun" phase. Very disappointed with this product, waste of money.