'Pull' Drill - Focus will be on learning to 'catch' the water with your forearm and pull yourself through the water. If you feel your lats (the muscles under your arm pits that go down the side of your back) engage, then you are starting to get it. If your shoulders are tired, then you are still using too much shoulder and not enough lats.
T-Pace = swim test time / the number of 100 you swam. If you swam 20:00 for 1,000 yards, then your T-Pace would equal 20:00/10 for a T-Pace of 2:00 per 100