Volleyball butterfly drills are used by coaches all over the place. I'm not personally a big fan of them for a couple of reasons.
Want your players to react more quickly to balls? There are two facets to doing that, and a lot of stuff coaches do in this regard is basically worthless.
Should your setter take every ball, or should they be able to call for help on balls far away? I actually think it's a question with a mistaken focus.
Professional and international non-setters often step in to set when out-of-system. You know why they are so good? Because they practice all the time!
Here's a scenario a coach presented where you need to come up with a way to do setter training on a half court with some constraints.
The Charleston Academy season is over for 2018-19 following completion of the AAU tournament in Orlando, FL. Here's how things went.
We coaches (should) know how much we can influence those around us, emotionally and otherwise. It's something we also need to teach our players about.
Remember that player reactions start with properly reading the visual cues, so it makes the most sense to include those cues in training, not remove them.