Been using this one for many years, has worked awesome, on pine needles, thatch and crushed granite driveway.
https://machovec.com/catalog/3_point_dethatcher.htm
With a bumper pull you can also use it with your tractor , I plumbed mine with couplers so I can hook into the tractors hydraulics. it dumps considerably faster on the tractors hydraulics than electric pump. I have an H&H 16' and it's fairly easy to overload with soil, shorter would have been...