Best movie plot holes of 1948

Plot hole: When Ralls runs the Witch onto the reef, he is at the helm. As she strikes bow on, the wheel spins madly for no reason, as the tiller ropes would not have been affected by the collision.

Plot hole: When Porky walks up the stairs to his bedroom, Sylvester is clinging on to his back, still terrified. When Porky is in his room, he has somehow removed his clothes with Sylvester still clinging on to his back.