Actual experience: A few years ago caught up with a husband/wife two who had been sent off the back while we were playing the front. On EVERY green, the wife would get down on all fours to line up her putt. We watched and on every hole she at least 3-putted and sometimes 4 or 5 times. EVERY time she would get back down on all fours to line it up. They never waved us up or through.