Steve cuts the tree with a chainsaw at a downward angle. Later when Officer Pua Kai is investigating the tree theft, the stump has a horizontal cut.
During the bull riding scene, the announcer can be heard saying that the rider needs to stay on for "another eight seconds". In fact, Bull riding is judged for only eight seconds.
When Steve was cutting the tree, it was an angle cut. When Pua goes to the protected forest, the tree stump shown is a straight cut.
Danny and Kono were transporting a poisoned man to the hospital. Kono told Danny that the poisoned man wouldn't make it so Danny accelerated. But the tacho, which shows the engine speed, went up way too fast. That could only happen if the car was in neutral.
If any one had checked the tree closely, they would have seen that the way it was cut did not match the shape of the remaining stump at the forest. That means it is not the same tree and therefore no fine should have been issued.
The Christmas tree seller describes the tree to Danny as a Colorado Blue Spruce when it is actually a Norfolk Pine which is found on Oahu.
Al Mokuau says to Danny and Kono that a bull rider is judged on how long they can stay on the bull as well as how well the bull bucks. The latter half is correct, but the rider only has to stay on for eight seconds to qualify to have his ride judged.
Chin refers to an arrival "at 2am this morning." As AM means in the morning he should have said "2am today."