In cases where there is nothing to attach on the sides of the curtain and adding a post for attachment isn’t an option we can do what is a called a ground anchor, with ground anchors there is no side attachment on the curtain at all. The only form of attachment will be a strap at the bottom of the curtain just like the safety strap and will come with a piece of hardware that will need to be installed onto the porch of patio Itself. As this will be what is holding the curtain secure on one side it the hardware will need to be placed in sturdy area that can withstand a load. (I.e. Wood, Concrete, Brick, etc.) NO patio stones or garden stones as these can be lifted up.