Planning on taking a trip with some friends to Bahamas. I live in South Florida. We will be leaving Miami at 630am and heading to the bahamas. I would like to launch the Phantom a couple times during the travel to Bahamas. I flew over water plenty of times. But, never launched from a boat. Looking for advice and tips. Compass calibrations from the boat or no? Also what if the boat is small with a roof. Is it possible to launch from hand or any tips you have? Should I fly in atti or P?