We sold an old front mount 8 row cultivator to an organic farmer in northern Illinois. They made it into a rolling cultivator for use with small plants. He sent us a few photos of how it looks after modifications.
From his email: "Units are not quite set yet but this is the basic look. Front basket runs at ground speed and drives the rear basket a little faster like a rototiller. Should be able to run at 6 or 8 mph even at spike because no dirt is thrown on row."