Here is the same setup rigged for a SwellPro waterproof drone. The servo is waterproof, so the drone can land in the water. Personally, I prefer the Phantom 4 as it is really easy to land back in your hands. The SplashDrone is too unreliable. And, it turns out, it's not really waterproof. The only good thing about this setup is that the drone has a servo port available, so no external controller is necessary, we just use a switch on the drone transmitter to release the clip.
Having some fun in the pool: