Phantom 3 Standard: Received a new P3S in December. Haven't flown it yet but have been studying the manuals and reading the forums, and I have 2 questions: I have been using the flight simulator app at home while waiting for winter to end, and I took off the propellers to make sure I didn't do something stupid in the house. Question 1: If the P3S were to start without the propellers would that damage the motors. I assume so but am curious if my assumption is correct. Question 2: I now have access to a large indoor arena (actually a sports complex) and the owner will let me practice when no one else is using it. I assume practicing GoToHome will not work indoors since the P3S will see no satellites, and the calibrated compass would likely be misled because of the possibility (probability) of indoor interference? Can someone here confirm both of my concerns, or correct me if I am wrong.