Plot hole: How would Arnold know about the cop hitting the bus when he was running away from him during the parade? He was far past him at that point.
Plot hole: There is no reason that Eden Hall couldn't have accepted the Ducks and also kept some of the JV players as well other than they didn't want to hire more actors for the team. Keep in mind, by the time the Ducks actually attend E.H. they only have 12 players (with two goalies). Once Banks gets transferred to Varsity they only have 9 skaters. Surely they could have allowed the cut JV players to rejoin the team since they barely had enough skaters for 2 full lines.
Plot hole: In the beginning after Flint buries the treasure, he kills all the men that are with him. The pistols he has are one-shot pistols, so there's no way he could kill 14 men using only two one-shot pistols.
Plot hole: Why is that shark machine even there? The only reason it's there is to help the plot, and I don't see how it is of use to anyone in the corporate world. If the shark just ejects the fish it turns into fish heads out to sea, there is too much chance they will be ruined by carnivorous fish or weather before they are picked up. And fishing companies should know better.