One thing that wasn't really addressed above...I think there was a subscriber who wondered if he should just close the position today, instead of waiting until tomorrow (last day to sell prior to earnings). If I'm in a trade that's 10% down, I see no reason whatsoever to sell it a day early. The last day is one of the most likely ones that the IV increase will exceed theta. So there's a decent chance you'll gain much of that loss back. And even if you don't, you're not likely to lose more than another 1-2%, which is a risk worth taking.
I really sleep well with this trading strategy, because I: 1) don't care which way the market goes the next day, I simply hope it goes big even though that's not always necessary either, and 2) I know I'll never wake up in the morning and log into my IB account and find a position that lost 60% overnight, which is what I saw way too often with my previous directional trading strategy. It sucks when these trades go against us but the losses aren't the type that should stir any panic, including selling before the final IV push begins on the last day before earnings.