* Yes- It has happened plenty. I won my first with a zone team.
* OR is the zone master, IMO. and he could enlighten you more than I could.
* You can't have weak defenders, though. Many zones do it to hide weak defenders. In high D1 that won't win you a championship.
* I think it is effective slowing down quick press/ fastbreak type teams that win on athleticism and speed. In 3.0 with all the coin flips, it is actually a pretty good strategy against these types of teams because there are fewer 12 man teams & zone can keep you form tiring out while slowing down great drivers and athletes.