On occasions too numerable to recall I have found myself ground looping on the deck, or tossed off the side or into the island of a CV which has started a hard turn during my launch. In RL takeoffs are controlled by the launch crew. Couldn't we have some kind of klaxon or flag to warn pilots on deck that the ship was about to begin a manoeuver? It's so embarassing to crash on takeoff, not to mention, bad for your health.