Bright spot light visible on the boat anchored in the inlet all during the torching of the boat but spot light was not there immediately prior to arrival at boat nor when departing the boat.
On the boat, Vanessa is distracted and Sarah escapes into the water. Shortly after, when Sarah gets back on the boat and attacks Vanessa, her clothes and hair are dry.
Visible or bright sunlight (and once a shot of bright blue sky) during all daytime scenes when there is an ongoing thunder and lightning storm with constant rainfall.