I have had my P4P now for over a month.
Here is what I have learned both from my experience with the 4 Pro, the different apps and reading other posts from those who have had problems/flyaways or crashes.
First, before you use automation, you need to have the skill set to be able to fly your drone anywhere in any condition and more importantly, be able to take over control at a moments notice and through much practice before, be able to steer clear of the eminent danger or event that is happening.
Secondly, each app has its own strengths and weaknesses, but all of them require practice and thorough understanding. Learning not to panic when something happens and being able to quickly shut off an app and start another
By reading the post from others who have had flyaways or unexpected results on their way. Missions, I have paid attention while practicing with the apps in my living room, and have learned to double check everything before I ever take off. For instance, one day I want to use zip line mode in auto pilot. As I went to go set my A and B positions, I noticed that the defaults we're set 500 miles away from me for the A position and the B position was set across country in New York. Had I not paid attention and executed the mode, who knows where my drone would've flown off to.
As a final comment, it has become my practice to always calibrate my compass before flying in any given location. I have never had any adverse flights, crashes, or unexpected results. I have been flying drones for over four years. To me it is just important to read everything you can, read all the posts you can, and understand the machine and the applications you use to control the machine.
I love my fountain and it's technology and capability.