I read a post on another forum about the Imants spade rotovator. Ive contacted the distributor and my interest is high. The product is made in Holland. The manufacturer states that it will till or work the soil to a depth of 14 inches. I am still baffled as to how the machine works. I am planning to visit a demonstration of the spader this week in PA. Has anyone used the spader, and if so what problems and operational concerns have you had. Thanks in advance.