I don't do digging anymore (or windows), so I do the following and it is totally successful for me. This has also been done out in the paddock, without having to dig up the soil. Beds were put down straight on top of the paddck grass. The thick newspaper stops grass/weed growth.
Put sheets of tin, aluminium or logs, boards etc. whatever is available for the sides.
Water the bed area thoroughly and then layer newspapers (thickly, watering between each layer), then sprinkle a bit of blood and bone over and between the layers of wet newspaper (this is supposed to get the newspapers composting and the worms active I believe).
Then layer hay/lucerne hay, with manure and compost added between layers as well as sprinkles of blood & bone, until built up almost to the level of the sides. I also usually spread about in the hay any uncomposted kitchen scraps - everything can go in - herb cuttings i.e comfrey leaves etc.
Top it up with soil and more manure.
Then finally the mulch.
It all composts into a rich and worm filled soil.
Over time it settles further and further down, but the yearly topping up with compost, mulch, manure etc. keeps it at a good level.
Another layer of lucerne hay can be added on top again the next year under the compost, mulch etc.
It sounds a lot of fiddling about, but I don't mind that. The no digging is what I like.
I have been doing my beds like this for 6 years now and they just need topping up with manure, compost mulch etc with each years planting.
As I said, it is my less physical no-dig way, but it works for me.
