They still need to give you 30/168 for LCR because you’re always on duty. I was flying with a CA a few weeks ago who bids LCR in one block starting on a Fri or Sat then PTOs the first and last day. 30/168 gets him two more days off in the block so he ends up with 17-18 off a month working with majority weekend days off. According to him he’s had good luck avoiding the calls. YMMV but seemed like an ok plan to me. Late start on day one and get lucky with early release on last day and that brings you down more or less an extra day.