If you look back over the history of Iowa football under Kirk Ferentz, two things are usually the barometer of whether or not we will have a good season.....special teams and turnovers.
If you look back at our really good/great seasons.....2002, 2003, 2004, 2008 and 2009.....they are marked by those two things.
When looking at 2002, our offense was pretty good, sure.....but a lot of those scoring opportunities happened because our defense forced 31 turnovers and often gave the offense a short field...and on the flipside our offense had the fewest turnovers in the conference. In addition, our kickoff return game was 1st in the conference, our net punting was second in the conference, our punt returns were 3rd in the conference (and we scored 3 tds off of punt returns, 1st in the conference) and we had the best field goal kicker in the college football (sorry Mike Nugent fans).
In 2003 our offense was fairly anemic from a yards standpoint (although we were 3rd in scoring offense due mainly to short fields), but we forced 25 turnovers, were 3rd in punt returns (and 1st in tds off of punt returns with 4), 2nd in kickoff returns, 3rd in net punting, and still had the best field goal kicker in college football.
In 2004, we lost 17 running backs, and were middle of the pack in terms of scoring offense, but we forced 32 turnovers (tops in the league), were 2nd in the league in punt returns (and scored 2 tds off of punt returns), was 2nd in the league in made field goals.
2005 was one of the more prolific offenses in school history. We gained over 5000 yards of offense and averaged more than 30 points per game. But we only got 16 turnovers (8th in the league), were last in kickoff returns, middle of the road (6th) in net punting and missed field goals at inopportune times. This was a year of lost opportunities as 30ppg and over 400yds/game, along with being 4th in the league in scoring defense, should have translated to more than 7 wins. But as history has shown, if we aren't creating turnovers or winning the hidden yardage battles (kickoff and punts) or capitalizing on field goal opportunities, we struggle.
I'm not even going to go into 2006 or 2007 as those years were AWFUL!! Except to just say that those two years combined we only created 41 turnovers and lost 44!!
In 2008, we were back on track as we created 32 turnovers, came back to the middle of the pack in kickoff returns, 4th in punting and 3rd in punt returns. The games we lost came down to special teams mistakes though (fumble on punt return against NW, missed field goal against Illinois, no field goal attempt against MSU due to lack of confidence).
In 2009, we once against created a ton of turnovers (30), were 4th in kickoff returns, and 3rd in net punting and scored 2 tds on special teams (one on kickoff and one on punt return). An injury caused this from being a "special" season instead of a great season.
2010 was the year that should have been, especially based on the "stats". We only created 24 turnovers, but lost only 11, for a net of 13 (3rd in the league and 7th nationally). We were 2nd in the league and 12th nationally in kickoff returns. We were 3rd in the league and top 30 in net punting. We averaged 30ppg on offense and were 2nd in the league in scoring defense. All stats that should correspond to a great season, so what happened? This was the year of the special teams meltdowns. Against AZ, we give up a kickoff for a touchdown and miss a field goal. Against Wisc, we miss an extra point and allow a fake punt that resulted in a touchdown, against OSU we miss a field goal and against Minn we just gave up.
So I guess I'm not all that concerned about what we do for an OC based on past history. We've had good offenses and bad offenses and still had good/great seasons. But it seems like if we aren't good on special teams and aren't creating turnovers on defense, we pretty much know we'll end up with about 7 wins.