For all of you who have a Tractor Suppy Store near you, if you see a new shipment of trailers come in. they are stack ontop of foam blocks. the fome blocks are perfict if you take two of them and tape or bale them together and it makes a great target. it wont last forever, but it will make a good back stop if you collect all of them and then make a wall of blocks. dont tell them that you are using it as a archery target as they might start to sell them then. say its for a project or something.