Chickie'sMomaInNH
Garden Master
what you could do instead it take a 2x4 and mark off the feet or distance you want to plant between.If I were to be spotted in the garden on all fours dragging around a small ruler and pencil, my DH would probably decide I had finally lost my last marble.
(although I'm sure this author's system has a lot of merit)
though i could get away with the finding my 'marbles' since i keep tilling some up in my garden. i usually find a few each year.