In reply to philipjardine:
Hi.
I bought a lomo 3m x 3m last year as it was one of the cheaper ones around. Mainly used for a porch for a 3man tunnel when its wet. I use a couple of walking poles to make a doorway at the front.
Plenty of loops for different guying options.
Main downside is that all of the stitching on the loops hasn't been taped or sealed so they leak if water pools over them. There are loops in a line down the middle of the tarp that is mainly where this happens.
Also the stuff sac is very snug, mine has ripped already after a couple of outings.
Nick