The lake is like a NASCAR course, left turn, left turn. my mistake was trying to come down at the same time we was rounding the corner of the lake while keeping a smooth rotation as using yaw only and not pitch with it makes for jerky video. So as I was coming down and turning with a fast moving boat I hit CSC, with no warning other than the manual as most have posted, BTW (I did not get a manual, just the quick start guide).
Either way I am understanding I will never get any compensation for my P3A taking a dump because you can shut down motors in an instance should the sticks move to any of the bottom corners in flight which I think is a flaw.