Shot this video this morning along a river. It was overcast with no wind so the water was like glass. The downward sensor didn't like the flat water so I had to disable it. Almost hit a wire at 0.35 seconds that I notice at the last moment. Still working on getting smooth stick movements and I still need to change the stick settings in Go4 to add a little buffer to take the edge off. I used a ND4PL filter.