The ending - spoilers
The movie was very well acted; the river action was great; wonderful tension throughout; but...
the rescue just wrecked it for me. "Suspension of disbelief" is one thing, but no way could I buy
1) Tom getting down river faster than the raft
2) in fact, so fast that he can cook up and execute an elaborate scheme
3) the scheme itself is so farfetched; there's not one chance in a hundred of it working
It's a shame they couldn't come up with a believable rescue.
"I choose to think there is no free will..."