Sturdy Used Boat Hull Mold - Would make a unique in-gound Pool or Yard Pond Coated on the inside with durable black gel-coat. Can be washed and polished to a nice shine. Dig a hole in the yard and drop it in. Much cheaper than new fiberglass pool. Comes with pumps and sand filter if wanted. 14'W x 36'L. 5' deep at stern and 6' deep at bow. Fairly flat and at the stern and V'ed and deeper near the bow. $750 OBO