The act of shooting video should be both planned and experimental. By creating a shot list and storyboards you can select your equipment and locations more effectively and shoot your scenes in a more efficient order. But just because you have a plan you shouldn’t avoid the detours.
Complicated and highly coordinated shots are hard to accomplish without rehearsing. Good practices also include repeating a shoot even if the first time seems perfect, and never trusting the image you see on a small visor, checking it as soon as possible on a large screen.