Muscles Used in the Backstroke. Even though you're swimming on your back, you use your abdominals in addition to the muscles of your back -- the latissimus dorsi and spinus erectors -- to support you as you flow through the water during the backstroke.
The average distance for a pitching wedge is 130 to 135 yards; for a sand wedge 115 to 120 yards; and for lob wedges 75 to 95 yards.
the sweet spot did indeed produce farther hitting distances but not 2 3 times as we expected the distances at the sweet spot at an average of 47 67 feet were only about 30 % farther than some of our lowest distances around 33 feet which were hit a few inches from the handle