I've got a bit of a tarp addiction and use a variety of setups depending on the weather really.
If I'm tramping on foot I'll and the weather's fine I'll use a RM Aus Hootchie usually, if there's a chance it might get a bit wild I'll use a DD 3x3 for the extra cover.
If I'm canoe camping then I'll be using my new SOTP big tarp, too heavy to carry on foot really but the big living space is superb to have.
If it's going to be a midgefest then I have a Hennessy Exped with the built in netting, but I prefer an open hammock any day of the week.
I always setup my tarp and hammock the same way Will demonstrates in his tutorial ....
http://www.bushcraftuk.com/forum/showthread.php?t=43612
Big SOTP tarp back left of this pic
DD 3x3, taking a hiding off a brisk Loch Lomond wind
DD again at Middlewood last autumn
I've just realised I don't have any decent pics of my setups, must ammend that next time I'm out