Yeah fair enough .. thats the production farmer in me I suppose but it does loosen and mix sub soils and topsoils pretty efficiently I always feel sorry for the worms as im out power harrowing or hoeing but Im also big on soil prep for my plants .. the bigger the hole the better the plant not just how deep but also the circumference of the hole ... back home me and me old mate have holes we have been working on for close to 10 years digging em out further each time and filling with seaweed and other composts