If you are handy, grab a 8" posthole digger (even the old manual kind will work), dig down 2' and put in a 4x4 post on the grass and fill with concrete, should only need 1 bag. Then grab a 2x4 and fudge cut the angles until you get it to connect (make the 3 1/2" side face up, not the 1 1/2"...