My neighbor bought my old Iggy folder. The polyester skin with plasti-dip is leaking badly, so she wants to reskin it. She found some material like coverlight at Tacoma Tent and Awning. The have both the 10 oz and 18 oz. She thinks the 18 oz is very heavy. I told her that is what is recomended on Yostwerks, and said that the 10 oz may be too light. Am I correct that it is too light, or have others used it successfully? It shouldn't see too hard of use from her. She would like to keep the kayak as light as possible.