Zone blocking opens up so many cut backs...now...teaching zone blocking is a pain in the a$$!
There is a big big big theory that when you play a zone blocking team you really want your DT's especially to stay as square as possible, taking up as much space as possible, to take some of the cutback lanes out.
Yes, when to come off or trade, going to the second level- real PAIN IMO
You cant do it with everyday Joes, College teams and of course the NFL has them. All your linemen have to be good at getting to the second level. Heaven forbid you have to have that kid play both ways and have to use up Defensive Indy and Defensive team time on him every week
Of course the Broncos made it famous with Terrell Davis and those smaller athletic linemen
Here is Gibbs explaining it with some very nice clips- explains it really well> I could post his words, but the video is better: