2011 Tuesday Night Time Trial Summary

This year I felt pretty good about TNT.  My average was up a little from 2010, the year I was recovering from injury, but down from 2008.  2008 is still my fastest year. 
In 2009 I did two races late in the year and they were slower, as expected.
Below are all the results for 2011, plus the averages, and the number of races, for 2006 - 2010, for comparison.
My goal is still to hit 24MPH.  To do this I am going to have to focus on my bike even more than I do, which I am not sure I have the time to do next year.  I have to build strength (core and legs) and, of course, stamina (more time on the bike). 
Can I get away with strength and core work in the off-season, and about the same amount of saddle time, or less in 2012, with more intensity, to get to 24MPH?

Race is always 11 miles of rolling hills.
2011 Results (5 races, missed two for work and one was rained out.  First ever rain out)
West-to-East course

5/24/11 - 29:36 = 22.3MPH (65/93)
6/7/11 - 30:14 = 21.83MPH (37/62)
6/21/11 - 29:25 = 22.43MPH (18/33)
7/5/11 - 28:32 = 23.13MPH (31/52)
7/19/11 - 31:10 = 21.18MPH (41/53)

Average Time = 29:47 = Average Speed = 22.17MPH
Average Finish = 38/59

2010 Results  (5 Races)
East-to-West Course

Average Time = 29:59 = Average Speed = 22.08MPH
Average Finish = 46/61

2009 Results (2 Races)
East-to-West Course

Average Time = 30:44 = Average Speed = 21.49MPH
Average Finish = 52/62

2008 Results (7 Races)
West-to-East Course

Average Time = 28:43 = Average Speed = 23.03MPH
Average Finish = 35/64

2007 Results (5 Races, First year on a tri bike)
West-to-East Course

Average Time = 30:45 = Average Speed = 21.46MPH
Average Finish = 40/52

2006 Results (2 Races, On Lemond Sarthe road bike with bolt-on aerobars)
West-to-East Course

Average Time = 34:13 = Average Speed = 19.3MPH
Average Finish = 51/52