An alligator grabs a victim by the feet and she is dragged feet first into the brush-apparently captured by the first gator in history who can run straight backwards as fast as it runs forward.
One person talking on a mobile phone during takeoff is not going to make a plane crash.
At around the 50 minute mark the characters start scavenging for wood to build a raft, out in the middle of nowhere, the wood they gather has saw cut ends.
The tag line notes "a plane crash in the desolate Louisiana everglades". Louisiana has many swamps, bayous, and backwaters to choose from, but the Everglades only exist in Florida.