I learned the same lesson, also the hard way. I was called in off duty to the firehouse I work at, during the floods in MO last month, I was inspecting a possible leak in the levee from the command post, I lowered to about 40ft, on the other side of a tree (no line of site, big no no) the chief said that was good and he could see what he wanted just fine, but I had to show off and get a little lower. The bird had rotated and I didn't notice because camera was filming straight down. I was drifting a little close to the tree, I thought I was moving it to the right, but went left, into a some branches and then kur-plop, right in the flood water. I had just purchased the P3P, but I didn't have it set up yet, so luckily it was my P2 vision, still a bummer though. A week later a guy from the National Guard stopped by the firehouse, he had found the drone, and reviewed the sd card and saw all the fire apparatus. It was under water appx. 2-3 days, the battery was shot, but with a fresh battery it still lit up, and the camera worked, but wouldn't move, and obviously it wouldn't fly. I might see if it can be fixed for a reasonable price.
