Olaf the Stout
Legend
I keep mine rolled up in a large cardboard tube.  When I get it out to use (which is basically never since I now just use Flip Mats) I just roll it the opposite way quickly.  It still rolls up a little at the corners but that's nothing that a bit of weight like a book won't fix.
Olaf the Stout
				
			Olaf the Stout