Was using the shovels off a David Bradly cultivator but could not get them close enough to get all the weeds. Got these 7 - 9" shovels, new old stock cast in Canada. Put them on in place of the DB ones. Had to widen the frame out to get the shovels spread out but hard to get it set to where it covers the whole width with shovel overlap, and not to much overlap. Anyway this is what I ended up with. Will give it a try in the morning. Had the tractor up on 2" blocks and got the shovels level behind it so should work OK.