I do not get into this area. I have used a knee kicker and its does the job but not actually very well.
I was in a home painting the interior when some professional carpet layers came in. They brought this long telescopic pole with a ratchet of some sort that really did a good fast job. It did not look difficult to use, one end of the pole was on the wall and the other on the opposite wall. there was an apparatus that grabbed the carpet and some sorth of come along device stretched and held the carpet while another did the tucking behind the tac board. very good and very fast. then did the same procedure on the opposite walls.