On Sat, 31 Dec 2011 14:36:04 +0000, AL_n wrote:

I do have a great pile
of grass sods that I could use for extra weighting-down, but I'm not
sure how that would work out.

That would be a waste. Stack the sods up, green side down and wrap the
stack in Polyethylenus negra (yes, it was I) for a couple of years.
You'll end up with a lovely heap of loam.



--
gardening on the beach in Jersey