Continuity mistake: In the scene where Jason does his own training by kicking and dodging the moving sandbags hanging down, he finishes by kicking each bag individually. Look closely - one of the bags is only being held together by a thread, so when Jason kicks it, the bag splits open quite easly. (01:06:45)
Continuity mistake: When Scott bullies RJ outside the burger place, Scott is in one side of the table and is kicked by RJ in the stomach, RJ falls to the floor and in the next shot Scott is now beside him.
Continuity mistake: When Scott is using the hose he is sitting on a chair with his house in the background. In the next shot the house is gone and there are some trees. The his dad yells at him and the house is back again.
Suggested correction: You probably hadn't a chance to rewatch carefully. The camera angle changed more or less from Dad's perspective a bit raised, and so you don't see the house but the lawn. All the green in those shots is not trees but rather the lawn, with the same shadows (more or less, the light does not quite match but it's very minor) you see previously.
