Here a picture of one. 
The 'wheels' poke small holes digging up some small clods. With some speed it will do a good enough job that the ground will hold up to maybe a 30-35 mph wind.
72' of it. 
Most of our area is highly erodible land. Get a rain and it will crust over a bit. After it crusts over it don't take but a good sneeze to make it blow.
Edited by dutch 1/28/2010 18:50
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Rain!!!
