No just keep the target on sight. Check the producers notes, when he is firing a missile and then he turns just to demonstrate what you are asking.
I recommend to check all the producers videos in youtube they are quite help full. Also try to cheat start the BS (Window key + Home) to check if you are missing something at start up. Also use Right Ctrl + Enter to check your input.
You should engage auto hover at a speed of 10km/h after you trim it stable.