PG and Redbird we do the very same thing. It has worked well for us over the years.
There should be no arc on the ball. There should be no drop on the ball. In other words a frozen rope or straight line throw. The ball should be at its highest point when it is released imo. I like the term throw down hill. In other words throw a seed from hand to glove on a straight line or down hill. You can see lack of arm strength by the way the ball travels over that 127'.