HELP!!!!!!! cargo cover

i'm a proud owner of a 2001 jeep cherokee and i looked into getting a cargo cover for it. i went to the local dealer and he said that they were sold with a roll up cover but not availiable any longer. ive been looking all around and all i see is the cloth covers that have 4 hooks and they hook to the spare tire and the right side trim. well i dont have the mounts in my jeep for anything. so i'm really confused. what am i looking for when it comes to a cover roll up or a cloth canvas ............what am i looking for?

It hooked into two divits behind the seat and seat back height. And stretched to two more near the back hatch. Kinda a pain in the ass really. You would probably be better off just building a removable storage rack for back there.