I cannot comment on how long it takes to do 40 acres, but per the old farm joke, all you need is 20 farm hands to step on 20 rakes to get 40 acres ....
IH M Farmall-propane powered, H Farmall (father-in-laws), Ford 1300 diesel
MrJimi, good to see that getting your caffeine rush back has awakened your inventive side again. Good job. Might need some lawyer type stickers on there showing which end should go up, to keep feet out from under pointy end, etc.