Courtesy of Roxanne C., co-author, SPIN-Farming, Philadelphia, PA
Knowing the advantages to the standard size bed will get you a long way towards understanding the SPIN-Farming system. A standard size bed measures 2 feet wide by 25 feet long. Its width is easily straddled with the legs, making hand work within the bed fast and easy. It also corresponds to the width of most rototillers. The length corresponds to the length of most garden hoses. It's overall area of 50 square feet can be worked without tiring. It also is the basic unit of measure in SPIN's revenue targeting formula, which is used to calculate a plot's income potential.