This idea i came across on the internet where a couple of fellows converted all types of equipment like tables to pontoon boats.
lately i see this in marine or boat shops for crazy prises like 30k+
this project including
Aluminium roof-rack
Pontoons
and Motor cost me less than 12k WTF dealers........
myself and a couple of my friends tested this boat at Benoni dam, we were in combined weight of more than 300kg and the motor and he fuel tank