If I am running a press currently, and on my press everyone is at least a- or higher IQ, except for three bench players who are b's, and I want to switch to a zone for next year(Only four players returning)  if I just spent 25 minutes on zone IQ the rest of the season might the zone IQ get high enough to run a zone/press instead of a press by the end of the season without the IQ putting a severe hurt on me?  I hear people saying you can 'get away with' a bit lower IQ's in the zone than in other defenses.  I'm switching to zone either way next year, but was just curious.

25 minutes in zone for a full season will get most (if not all) of your guys to C+/B-, so you should be OK I think.

So I guess yhre question is, at what Zone IQ should I feel OK making the switch to the zone press without worrying too much about  it?