Nice videos from HPFirearms on building a pontoon boat. I have not seen any other videos on pontoon boats and I enjoyed watching these.
Homemade Pontoon Boat Build (Video 1) by HPFirearms
http://www.youtube.com/watch?v=D8uOlPKy6DM&feature=c4-overview&playnext=1&list=TLNDgYgWFDksc
Homemade Pontoon Boat Build (Video 2) by HPFirearms