I'm taking a different approach to digging this year. I'm not yet convinced enough to go for a complete no-dig system but I did notice where my maincrop potatoes did so very well this year was where the ground hadn't been dug for several years (prior to that it had been growing strawberries). And farmers always used to leave part of their land fallow each year - I think putting my meadow mixes into the rotation and leaving them for two or three years should achieve something similar. So anyway this autumn I've only dug compost into this patch where the ground is heavy and cloddy, so that the frosts can break it up over winter. Everywhere else it's already nice and fertile - and has mostly been mulched with compost over the spring and summer - so I reckon I'll cover bare ground with leaves to stop nutrients being washed out by the winter rains, then just fluff it up a bit in spring prior to sowing.