Hi Alan,
I cannot speak for the 2008 hammock as I own the 2007 model. However from their website it looks like the actual footprint of material is nigh on identical so draw from my comments what you will.
I am 5'11 and just shy of 15 stone and my build is atheltic and I find that the sides of the hammock encase me so fully it is hard to sleep in anything other than on my back. If you have the hammock very tight and lie diagonally across the hammock as much as possible, you can sleep, at a push, on your side but in my experience there is not enough room for you to bring your legs up and adopt a foetal position. For me this is not a problem as I sleep fine on my back or side without the need to curl up. However, people requiring to adopt other positions might find their evening spent less pleasurable.
These are great hammocks bar the limited range of positions one can lie in them so maybe an idea to give one a go. If you are going to any meets in the new year you can borrow mine.
Also note if you are smaller than me or a contortionist you might find you can sleep curled up just fine!
Hope that helps,
NC