This is the tarp i use, i'll take a photo with it up at some point so you can see how i usually set camp, it's one of the aussie basha things and i've got para cord on it, i don't think that a bit of plastic sheeting with sheet bent bailer twine fixings would do any worse, but i already had one of these. i love the versatility of them, being able to light a fire under it and adjusting to the environment as it comes.
Barn the Spoon