Hi, I am now a righty, but I suppose that in the beggining I was a lefty. There are things that I am not doing like all the other people, I just can't. Like skating (I am using the other leg) and when brooming I keep the broom viceversa .
I never thought of using the helmets vice-versa and they are working, I suppose . In time you will notice that in the beginning when the ocean waves are playing , in one helmet the tone is a little bit higher that in the other one, so you can switch the helmets as instructed by Rober Monroe.