The attack from the left bank showed riders as well as those tossing rocks. Once the attacked stopped, due to losses, the tree on the raft turned their heads to the right bank, thus indicating that another attack was occurring from that side of the river. This obviously shows two parties attacking the raft and not a mistake of continuity.
After making it down the rapids, Matt Calder's and Kay Weston's clothes are clinging and soaking wet. In the very first shot on still water, their clothes are clean, dry, and ironed.
Every time anybody steps out of the water, shortly after their clothes are immediately dry and pressed and clean. When they step off the raft after going through the major rapids, they had no blankets but then they are seen camping in the woods with 3 or 4 blankets, which are dry and clean.
In the opening scene of Matt Calder cutting down a tree with an axe, it can be seen that the tree had been cut on both sides with a chainsaw, and the axe finished off the last few wood strands in the center to complete the fall of the tree.
The chords Kay plays on the guitar do not match the chords necessary for that particular song.
When the mountain lion attacks Matt, it sounds like an African lion.