Does anyone know a good website for raft designs/plans?

Here are some sites about raft making. first link is the edu/outdoor link... The materials, design, and other features of a raft influence how it responds in a river. the second link is a step by step 2 person raft. The materials, design, and other features of a raft influence how it responds in a river. the link below has pictures of this style raft. if you want a puzzle with the correct answers in a uniques way, this inventive person has a step by step site...the only problem is you have to click to get the next answer to your question. fun!! Raft making the tom saywer way..very basic. The first thing you need to make a raft is wood that floats. The best kind of wood is balsa because it's very light weight and floats well. Then you need some rope to tie together the pieces of balsa. Before you put it in the water, it is a good idea to paint the wood and rope with wax or tar to make it waterproof. Otherwise, the wood and rope will soak up the water eventually and your raft will be history! Homemade rafts were a popular way for kids to travel down the Mississippi during Mark Twain's time. Fun site with pictures of the raft building contest...this will show you different styles of rafts.