Here are my favorite kayak sailing links. Haven't built one yet, but most of these have plans, or sketches of some sort.

http://www.nswseakayaker.asn.au/mag/36/osdgl.html
http://www.watertribe.com/Magazine/June2000/June00Horton.asp
http://www.shipwrecked.com/kayak-sail/
http://members.aol.com/profm/SailingCanoe/sailingrig.html
http://www.vision.net.au/~jennings/sail/sail.html
http://www.tassie.net.au/~lford/sails.htm

: I am a college student and am building a 16ft sea kayak. I need a small,
: easily stowable sail assembly. If there are some links or plans out there
: that you could e-mail my way that would be great. Advice will also be
: greatly appreciated.