I got this section of old rotary hoe from a farmer friend and had a couple of days of free time so figured I'd carry out my plan to make it into a lawn aerator. It will be loaded w/ about 300 lbs of large kiln bricks compliments of our local phosphate plant. The rear wheels have springs to hold them in the retracted position and a cheater bar is used to extend them w/ locking pins to hold them in place.
The ratchet binder will raise the front teeth so it can be rolled over asphalt/ concrete and not dull the teeth. Once hooked to the tractor and ready to roll, the ratchet binder is disconnected from the tongue via a locking pin.
I pulled it around some this spring w/ just a chain attached and the bricks on it and the teeth penetrated about 1 1/2". I'll see how it works next spring.