I'm about 75% lefty now. When I started out, I pretty much all right, but have switched. Kinda quick, over just the few monthes really. Didn't try to switch,, it just started to feel more and more natural. Glad as I'm finally balancing out, i.e., becoming stronger on left side as right, so as not so lopsided. Just hope I don't go way to much to the left now...