In case you aren't aware of it, I'll point out one potentially big problem you could encounter flying at sea.
It's something that most land-based flyers will never encounter.
The drone will record its home point (a GPS location) a little time after powering up.
But as the boat is moving, even a few seconds after launch, that home point will be somewhere astern of the vessel.
As you sail further, you could get to a point where the flight controller calculates that it's getting close to a point where it only just has ebough battery to get back to the home point (somewhere way back in your wake).
And then the drone zooms off towards the homepoint in the distance.
You don't want this to happen to you.
To prevent it, you should reset the homepoint every 5 mins or so to keep the home point close to where the boat is.
To do that, go to this screen in the settings and tap either of the icons indicated.
One resets the home point to the drone's current location, the other resets to the current location of the controller.
Either one is fine as whichever you set, the boat will have moved away in just seconds.
That will bring up one of these two screens:
Click OK and keep flying for another 5 mins or so and do it again to avoid having the drone think its home point is back somewhere over the horizon.
The other important thing is to bring the drone back well before you get into a low battery situation.
You need to allow time for making several attempts at bringing the drone in as it can be tricky from a moving boat.
It helps to have the boat going as slow as possible.
Bring the drone in towards the stern, with your catcher ready.
Rotate the drone so you are looking at the battery (back of the drone).
Try to match speed with the boat and gently reverse it towards the boat.
It's a good idea to do this backwards to avoid confusion on the controls ... left on the stick will move teh drone left etc.
Bring the drone towards the catcher up above face level.
The catcher reaches up and grabs the bottom of the landing gear to hold the drone level.
** Important** As soon as the catcher has the drone, you need to flick the flight mode switch all the way to the left (A or Atti Mode) and hold the left stick hard down for a couple of seconds to stop the motors.
This stops the drone from using GPS and that prevents the drone from fighting the catcher to try to get back to the position where it was caught.
This all takes coordination and practice between so the flyer and catcher each know what will happen and what they have to do.
And don't be surprised if it takes 3 or more attempts to get it right (that's why you need to start bringing it in earlier than you would on land).
ps .. for the Flight Mode Switch to work and to be able to switch to Atti Mode, you need to have enabled this setting in the app.
Any extra questions ... just ask.