Brian Sass shared a great post on the Austin (TX) Basketball Coaches Group. Coaches are our mentors...online, occasionally in person, and often in print.
It reminded me of Kipling's Six Honest Serving Men.
We need to avoid "speak fatigue"...that is, players getting tired of hearing us talk.
Explain WHAT we're doing (name as many drills as possible...saves time).
Remind WHY we're drilling it...e.g. "this helps us overcome pressure."
Share tips about HOW it should run (demonstration).
Give and get feedback.
Practice at a high tempo. Accomplish more in less time. Train more, talk less.
Use the four E's - have an edge, execute, bring your energy, and energize the group.