Hi we’ve obtained 2 very old pigtail cultivators with the ‘C’ tines. Both of them have seen better days but together we could make one decent one out of the two. Ones 4m and the other 3m. The idea is 4 rows of tines and then some foldable harrows and a drawbar to pull a light set of rolls. Bit of a back up machine really but would a 230hp tractor pull 6 or 7m? Having never used one before we’ve no idea. Probably no deeper than 3-4 inches maximum.