First off, I would like to say that you did not provide adequate instructions for this game. You should mention gravity in a game like this, because it caught me off guard. Second, I find it strange that the points of the bobber can touch the walls without striking out. That's pretty misleading.
I didn't particularly like the music you chose for this game, so I'm giving it a 4.
I will, however, give you a 1 for humor for the cute smiley faces. You could mention that they're worth points, by the way.
Try again. I can tell you have potential.