ddl, Sorry, but you'll have to give me a little more detail to understand what you mean. The garden's long axis is N-S and as it slopes downhill to the south we are planting our rows E-W to be more level and handle water better. I tilled it 5 times (or was it 4?) and as it was my first time tilling a garden, I was trying to learn how to do a good job. My tiller rotates the same direction as the tractor's wheels when going forward. When you start down a row after positioning the tiller at the edge of the space to be tilled, it kicks a considerable amount of dirt up out of the plowed area onto the "margin" of the garden plot. When I get to the other end and stop the tilling action, the tiller has dug up and thrown the last bit of earth toward the rear leaving a hole (with neat "beaver teeth" marks) in the ground.
You propose that I till the north and south ends with an E-W pass, if I get your drift. The dirt that was thrown out of the plowed area onto the margin will still be there as a series of tiller-wide mounds after the E-W passes. The places that were left as holes remain as holes, at least low spots just not as distinct as before. It is a lot quicker for me to just use a sturdy garden rake and some Sweedish steam to pull the errant earth back into the garden and to level out the holes along the ends of rows.
The first few times I tilled the plot I made passes N-S. The final tilling of the whole plot was made with E-W passes as I wanted any residual "lines" or tire depressions to run with the direction of the intended rows, E-W. The final passes (E-W) made the same problems as before, holes at the ends of passes and mounds of dirt thrown out of the garden plot at the beginning of a pass. I even raised the back flap to get it out of the way (before I left it max down to constrain the tilled up dirt better) so I could till while backing but that was not a very successful experiment. The tiller was forced deeper into the ground and the tractor would sink down into the tilled dirt quite a bit which lowered the tiller more making it till deeper and so on and so forth. In enginering terms, positive feedback. This positive feedback drove the system out of its safe operating envelope and lugged the engine. It was like trying to bore a slanted hole down into the earth with the tiller. I raised the 3PH during a subsequent attempt but it was too hard to "feather" the control and I got really inconsistent results.
As you can see, I was a raw beginner with a tiller. I think I did fine except for the holes and ejected mounds of dirt "out of bounds." Anyway the potatos, onions, corn, tomatos, peppers, radishes, letuce, and I don't know what else as my wife was planting again the next day is in the ground and it rained the next day.
I'm open to suggestions, especially with more detail as I would much rather be in the tractor seat than flailing away with a rake (they hardly fit my hands).
Patrick