|Thanks to everyone for thier input on this. |
Neil - I considered the 'plank' option you describe, but thats quite a span to have unsupported. I was worried if one of my heftier mates (100kg plus) was to drop on it, it could be fairly lethal.
Actually, the 'plank' option does seem to have an added advantage of providing another flat surface - particularly handy when cooking.
I'm still mulling the options over....