Build your own boat.
Like to build things? Check out this article on building a playboat.
Could be used for other things, surf boats, slalom trainers, etc... I
haven't heard of a sea kayak built using this method, but it seems like it
would work. Anyone done it?
Reminds me of this site, which also has great ideas:
http://www.ptone.com/boatbuilding2002/
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