thanks. A couple friends have said having 2 piles is good - eventually you turn one into the other to start 'newer' stuff in one. But you're right, since I have so little compost anyway I probably want to generate as much heat as possibly in one pile. Hadn't thought of that. I'm so new to this! :P
I'm fine with an open pile, except that right now it's tricky because I'm not sure where to put it. So I want to move it, possibly more than once, while I dig and reclaim the plot from brambles. I had one pile, realised I then needed to dig in that patch, so now I'm not composting at all yet because I'll just need to move it again later. Much of this is down to the fact that little of the patch is dug, and will be used for planting as I dig. So if I can chuck a crate under a bramble bush for now, then move it in a month's time when I chop down that bramble bush, all the better. ;D There is actually a rusting, falling-in corrugated iron compost area the previous person had that I can see deep in the bramble. I'll get to it someday.
Tina.