I'm in the process of putting a used 15x30 oval pool up now...Original owner said he bought the liner last year so I thought I could reuse it...It's amazing how much so things shrink!!!! Be prepared to get a new liner! I'm putting mine on a 30x30 concrete slab (kids basketball court) and so far the reassembly is going fairly smooth. I'm learning as I go by reading on this site
Good Luck
Todd