The nice thing about tarps is that you have lots of options. It's a good idea to go out in the back yard and set it up several ways. I sometimes don't bother pitching mine at all and simply lay under it like a sheet if it starts raining. (i prefer the night sky to nylon) <img src="/forums/images/graemlins/grin.gif" alt="" />
Set up depends also on what you are using for support. Trees? Trekking poles?
Single poles or double?
Here's mine....one trekking pole, one stick.....