The cover has a draw rope around the whole bottom with loops sewn in across from each other about four feet apart. I ran a rope threw them like a shoe lace to cinch up the bottom along with pulling the draw ropes tight

The cover has a draw rope around the whole bottom with loops sewn in across from each other about four feet apart. I ran a rope threw them like a shoe lace to cinch up the bottom along with pulling the draw ropes tight