Building a sea kayak

[Gardennorm]

Now to make the seat! I researched on the internet and thought this was the best solution.
I built a bow the same width that i wanted the seat, then filled a bag with concrete, put it in the box and sat on it...  :o
This gave me a perfect mold of my bum!! i painted this to stop the dust and then covered it with cling film and then put polyester, the cling film made sure the polyester did not stick to the concrete, if it did i would end up with a very heavy kayak!!  :o