I used pieces of wooden lath, 1/4 x 1 1/2 inch, and pressed it down over
doubled-over tarp edges, then nailed every couple of feet, using 1 inch
thin-shank nails, which did minimal damage to the underlying wood floor. The
boards were easy to pop up my prying up the board with a small pry-bar, and
there was no visible damage to the carpet. If you have slab under the rug,
this won't work.