Install the nail stakes at angles going away from each other when driving them through the vacuum preventer. This will reduce damage to the turf when removal in the spring. You may also choose to use only one nail stake through the Vacuum preventer. Be sure to cover with the repair tape to make a water-tight seal.
Sod staples may be added to secure the edges of the windward side of the cover. Simply fold the material over about an inch and place the sod staple through the folded section of the two layers.