I just switched to the single plate and I'm not sure if this was an intentional feature but noticed there is a 1/4" dia hole which is exactly 13" from the front boot measuring point. If you have a rear boot mounted you can measure the distance from the center of the hole to the tail of the ski and add 13" without removing the back boot for the measurement. Is everyone else getting 13"? Love the 1/2 hole adjustments and the ability to make them quickly.