Swellpro Spry is IP67 certified waterproof. It has a 4k camera and it can do a circle flight. It can follow you as it has a Follow -me-mode and most of all, it can return to the boat even if your boat has already changed location. That's what all you need to take videos of you especially when you are on a speed boat. Here's a Spry video for you.
Spry available in the USA at http://UrbanDrones.com. It shipped from the US, so place your order now by calling 954-213-4977