Steve_, what about getting a self propelled rototiller to do the raking for you? I have one that goes on the back of my John Deere 342, it tills a 42" wide swath with every pass. The local rental yard has a JD tractor and 60" wide tiller that they rent for $300/day.
I need to do something, because I have a LOT of exposed clay on steep sleeps and I’m just asking for major erosion problems. The pond guy said to throw down millet and said it would sprout in 2 days. For now, I laid down some brush around the perimeter to slow down the water flow.
"In the age of information, ignorance is a choice." - Donny Miller
