6 months Wrapup:

Here is a complex math breakdown of 2 sets of trading results in my own Schwab accounts using DITM - no losses, although a couple bad miscues on my part in 2011:
Buy/writes opened in 2010, closed in 2011 YTD:
Total invested $98,827 Return -$4,948 total months -65, divided by number of stocks 11. Unit is 5.9 months. $4948 divided by $98827 = .05%; finally, divide .05 by 5.9 months and annualize ( times 12) = 10.18% ROI
Trades opened in 2011 and closed YTD:
$122,733; Return $2,447 -total 32 months with 13 trades = 2.5 months/trade.
Despite 2 miscues - impulsively bought a stock on ex-D instead of a day or 2 before; sold a put that expired ON ex-D, not before; annualized ROI 9.6%
Not bad for a defensive strategy.