Hey all, recently heard about a new training aid from OB. You place it on the butt and it'l vibrate whenever your stroke is off, or you are standing up too early, etc. Wondering what your thoughts are? It doesn't officially come out for a month or two, but have any of you gotten a test try at some expos like SBE? I know I know Efren and Earl never had this yet they have perfect strokes, but might be a great tool right.