Thanks!
Yes, maybe adding the word "Turn" to those two buttons could avoid the initial confusion. I was hoping that people would simply try the commands out, see what happens and then understand it. I am guessing "up" and "down" are equally confusing, if not more so, because after turning their meaning would change. At least the meaning of "left" and "right" remains consistent from the island's point of view. But you are probably right and I should expect some people will give up when something is not directly obvious.