Good on you for seeking to improve your skill. Powerful casting looks good on video, but i don't know if it is necessary to catch fish. I think sometimes forceful casting may be slightly harmful to the fishing line, especially the leader knot.
Indeed thoughtful insight. I see what you said. In rocky place, fishs are often migrating just off the shore. Because of this experience, I too have neglected my casting skills. In fact, this is also a matter of appearance.