When Kris and Linda are rescued from the stream before the alligators are able to attack them, Linda mentions that they are supposed to be in the marshland miles away. However, the story takes place in California and alligators are indigenous to Louisiana, Florida and parts of Georgia; not California.
When Sabrina is chasing person who threw the brick, she clearly has no gun as she runs through exit door, but has a gun once outside.
When Kelly looks through the binoculars she says she sees a flash of light (reflection on the scope). Then Sabrina looks through them and her eyes "zoom in" to see the killers on the hill. Sabrina would only be able to see the flash of light like Kelly not the killers.
While standing near the putting green the Angels see the killers in front of them on the hill quite a distance away. Within minutes the Angels and Bosley come from behind to thwart the killers. There is no way they would've been able to cover that distance in time to stop the killers from behind.