The G1000 student was doing just that. Even when established on the final approach path on the ILS approach into Long Beach, he was looking at the iPad. Portable tablets are terrific tools for setting up an instrument approach and to review the details of the approach, but once you're on the approach your attention should be on the task at hand. Keeping aligned with the approach path and counting down to the decision altitude should be at the forefront while flying an ILS, not looking at the tablet. Remember, while you can track the airplane icon on the approach chart on the iPad it is not approved for primary navigation.