A tractor side mounted auger would remove the human element and be much faster. I did purchase a side mounted and it worked fairly well; unfortunately I did not get a heavy duty unit and it broke beyond repair. Hopefully with the input from those of you with experience replanting, a good heavy duty unit can be recommended? Auguring should be done when the soil is wet as dry soil causes excessive wear to the auger bit. A side note about auguring. I did learn from Richard Thomas, the founder of the viticultural program at Santa Rosa Community College that auguring or also rotatilling can cause glazing in clay soil and reduce water movement.