Yeah there are definitely gaps in the market for stuff like this. The power edger slits but the rotary motion makes it unworkable for the normal yoeman shape. I guess the power might be an issue with ploughing but I would have thought a small yeomans for a ride on mower could work well. Someone told me about that air injection thing and didn't know the brand thanks for that! Perhaps the ancient Chinese seed drill is a place to start they didn't have tractors back then!