Flat first serve. Trying to get the toss to land about 2 feet in front of the baseline. I notice my best flat serves are hit when the ball lands in that spot. Observations: Tossing arm about perpendicular to the net at point of toss release: Toss lands in the target zone but I don't get the shoulder coil away from the net -- I find the shoulder essential for power. Drops from 85mph to <75mph without shoulder coil. Tossing arm about parallel to the baseline net at point of toss release: I get the shoulder coil away from the net but toss lands short -- around the baseline. Also tried variations in between parallel/perpendicular tossing arm. And also the "J" toss with ~ parallel tossing arm. But not really getting consistent results yet.