Pretty stacks, but not a good idea for most of us to stack single rows...way too unstable.Heck, in Kansas the wind would blow it over.Any one with kids within a mile will find out just how fun it is to climb those piles.Wood moves as it shrinks,as does the ground, so no matter how carefuly you stack it, it will shift.I know it is tempting from a drying/measuring viewpoint, but don't do it.
Sign me "been there,done that"