This was so much fun.  These bamboo rafts were hobbled together, and we were kind of skeptical that they would float.  They did however manage to take us down the river, with the assistance of both Jason and I taking turns helping to drive the boat (meaning we used a long piece of bamboo to push off the floor of the river to give us some speed).  We inevitably got entangled in the "no wet, no fun" water fights, which all the bamboo rafts had.  We were soaking wet by the end!