Continuity mistake: Crawl is thrown into the manure pile and his hat falls off. Then Theo throws the pitchfork at him and the top tine makes a hole in his hat. Watch the shot closely: the tine on the fork at the top of the screen definitely makes a hole. Later in the day, there in no sign of the hole. Even in the next scene when Crawl is feeding the pigs, the hole is not there. And I can tell you from experience that a pitchfork tine leaves a hole big enough to notice.
Continuity mistake: Rebecca and Crawl are flying home from LA to her farm in "South Dakota" for Thanksgiving. However, when the plane lands, her family is standing in front of a sign that says "Wasco." If you look at a map, you'll see that Wasco California is just outside Bakersfield, which is a mere hour and a half drive north of LA.
Continuity mistake: In the bachelor party scene ant the bar Travis hands Theo a bottle of pills. They show a shot of Crawl drinking. In the next shot Theo is putting the pills in a beer, but it is a totally different beer bottle than the one Travis gave him.
Continuity mistake: When Walter and Theo are chasing after Crawl driving the combine, Walter is wearing a purple polo and a winter jacket. When Crawl returns and they catch up to him, Walter is wearing a light blue denim button up with a flannel shirt over it.
Continuity mistake: When Crawl sits down with the log he is about to whittle, there is a large branch sticking out diagonally from the log. When the shot flips to a profile angle, the branch is now sticking straight up.
Suggested correction: The branch sticks straight out of the log, the only difference when the shot changes angles it the position the log is being held at, having the branch sticking more pointed to the sky rather than straight out from his lap angle.
