How do you build a plywood john boat?

Here is a great link: http://koti.mbnet.fi/~ijl/amerikkalaista_tekniikkaa/jonboat.pdf I am working on my onm plywood Jon boat right now and am about 2/3 finished. I created my own plans based on the link and various other photos I found. The trick is taking your time and using the right materials. Be careful, it is addictive...