Notes from Billy Donovan:
What works at the NBA level may not work at lower levels. Different games, different spacing, wider lane.
Low post shots are inefficient at every level, unless you have a powerful player.
Match your system to your personnel.
In transition: most efficient are early (7 seconds) shots.
Not enough guys run hard.
Four spots always filled: corners, handler, non-trailer
He estimates that nearly 70 percent of time, 5 will be trailer. If the drag screen occurs, the 4 may be open for a three or for a basket cut that will remove the "nail help."
Depending on the availability of the initial drag, if not there, 5 can dive to the basket looking for a lob.
If the ball is pushed to the side, then Donovan wants "flip-drag" action.