Like three on lumber one on straggler to fake a scout opening, ofcoz the early rax also has to be somehow unseen by the opponent.
What about poles? Building rax under the TC can be an option?Being able to hide the barracks is kinda RNG-based, so it's very unreliable. Players do sometimes build the barracks earlier than they should though which acts as a fakeout by making the opponent expect a drush