This seat takes some sewing but is probably the most comfortable I have tried for a SOF rolling kayak. It dries by itself and can’t blow away. If you’re accustomed to a high back rest, look away. For good paddling ergonomics and rolling you probably don’t want a back rest in the way.
It takes some getting used to though.
This seat is made out of 25/50mm (1″ and 2″) velcro and some leftover nylon material from the kayak build. The sewing is pretty easy and should take you no time, almost. However, the fitting…you need to make the “hammock” style seat as tight between your supports as you can. I use ash wood and sand away the edges. Then you wiggle and force the supports in behind the rib. If you don’t get it right and it’s too loose, you just remove it and sew a little tighter until you’re satisfied. The material stretches when wet so you might want to wet it when you adjust the tightness.
I also give mine a thin coat of polyurethane. It helps keeping my rear end a little drier. You can either wedge in the foam blocks, use a bungee or glue velcro to them. I had this idea about sewing side pockets for the foam blocks too but haven’t gotten around to it yet. Will update if I do.
