What if the tide comes in so the water is higher? It wouldn’t be 37m then. I know our tide here in Morecambe can have a 7m to 9m difference between low and high tide. Thats a lot.
And is definitely the difference between having a flying drone or a submarine.
You would be better going to the beach. Stand with the drone in sight and hovering at a height you are comfortable with, and program your mind to what that looks like through the camera.
Or if you get it wrong best case scenario is
I crashed the avata on the beach today.