I want to follow a running train for 2 km and do aerial filming over it. The train running along the shorelines will make some turns. Therefore, if pV2+ following the train, loss of sight will happen. Ground Station Waypoints can be one of the easy options but the flying speed is fixed in Slow/Mid/Fast, I'm not sure if it will follow the train in constant speed. Course Lock mode looks good but will lost control or camera signal when train turns to other side of the forest. Any suggestion ? Thanks.