How much do these Piega p4L MKll weigh that they don't go through the carpet!
Anyway you stated you're not worried about the rug or the floor. GOOD!
Get the speakers placed exactly where you want them.
Get some cardboard (two pizza box tops would be perfect) cut the box tops in half.
First speaker...lean it back and put the a piece of cardboard under the front, stand the speaker back upright. Repeat with rear of speaker. Tape the cardboard to the carpet. Lean the speaker back again and using the holes in the cardboard as guides get a sturdy awl and hammer and pound the awl through holes. Do the back of the speaker. Repeat leaning procedure to get the cardboard out.
Rinse, repeat on second speaker with the new cardboard.
A two person job. You're welcome.
Regards,
barts