I am glad that it is working fine for you in Indiana. I don't see much difference in the time it takes. 6 tons per day is a good pace, something we get with the slinkies as well. So you are putting 2 pipes, 2' apart, at 6ft? And the 2 more at 5', and 2 more at 4', for 6 pipes total? And that trench then is 300 ft long?