the ending (spoilers)
I thought it was presented in a way that that can make it easily conclude that the man died, and him reaching up towards the light and grasping an ambiguous hands was really just him being led into the after-life.... but my girlfriend didn't get that suggestion whatsoever... She just took it literally, that he was simply saved at the last second by a another boater.
Then again, i felt the exact same thing in Gravity.... that she died, and all her visions of George Clooney and whatnot was just her dying mind conjuring up peaceful things to make her journey to the afterlife/death more pleasant.
what say you? Did anyone else think this?