I built a canoe/pirque(pee'row) for free plans and fished it alot if you want the plans I will email them to you.It takes 2 sheets of 1/4 plywood and a jig saw to make.It is called stitch and glue constuction and it floated me real well and me and the wife fairly well though somewhat over weighted.
This site has lots of free plans and tutorials.

http://www.bigdamfish.net/freeplans.html


Dennis