Alright for those of you who frequently play Wii Sports here is a little trick I learned a while
back which will allow you to bowl easy strikes. All you have to do is align your character up the same way I have with the black dot in the middle of your red arrow and you will easily get a strike. Also when your bowling make sure to curve the ball a bit. I'll post a picture of the game I just played below using this method. Hope it helps guys.