Originally Posted by DanTwoLakes
One way to weight down the plastic is to sew pockets on the bottom of the plastic and slip in metal electrical conduit. You can easily sew the pockets in with a home sewing machine and a helper. This can also be done at the other end so you can screw the conduit to the ceiling with conduit clips. Use the clips with one end open so you only need one screw per clip.
my floor is very un-even (think old barn) i use a chain to keep my plastic walls on the floor