Improving the ground for next years spuds

Well - like most gardening issues there seems to be a range of opinion. I am going to try to finish building and fill up my leaf mould cage for the following year but for this year I think I might:
Dig my spud trenches now and make them deep. Layer the bottom with a mix of mowed leaves and shredded paper soaked in comfrey tea into which I have chucked some chicken poo to help ofset any nitrogen used up as they rot, then partly back fill the trenches. In the spring I can then chuck some more chicken pellets and comfrey tea and plant the spuds before fully backfilling. Hopefully this will get them off to a better start then the fairly poor soil I seem to have at the moment. If nothing else it should hold water better for the spuds.

The following year I should be able to use the fully rotted leaf mould and in the meantime do a bit of research on green manures.

Thanks for the replies.

Leaf mould while been a great soil conditioner really hasn,t a great deal of nutrients in it. If you struggle to get manures to your site, another option is to grow comfrey. Comfrey, I,m a big advocate of the plant. It can be used to line trenches, as an activator for compost heaps, comfrey tea as a liquid feed. and my favourite comfrey extract, to be diluted with water when needed and keeps well into the following year in a bottle. The tap root get pretty deep, enabling it to get at minor minerals (magnesium, Boron etc) which are important to growing plants.

If you don't cover it, there is a possibility that rain will leach the nutrients down and out 

Also, covering it helps it rot faster as the heat builds up better