Eventually I will fence it, at the moment I just use a lot of netting to keep the rabbits out of the vulnerable areas.
I sort of fell into this method when I met a man from the next village who was using the system. I had never heard of it before. He told me about the books and I bought the “Organic Gardening” one and got a lot off the internet as well. Have a look around the website, on the old website there were some good articles though where they are on this one I haven’t looked, presumably still here somewhere. I also bought Jeff Lowenfels books which I found fascinating.
On the subject of compacted clay. My patch was previously a horse paddock but along one side sometime over 20 years ago lots of rubble had been added to allow tractors to pass through. So for 20 years this area had been driven over by tractors with heavy trailers and trodden on by horses. I have been erecting a greenhouse here (cold work at this time of year!) and as it is on a slight slope have had to dig out so make flat foundations. It is at least 50% rubble yet the worm life I found there was unbelievable. I no longer worry about compacted soil and hapily walk on my beds if necessary.