Depends on your broker. You might have to have two accounts in order to be both long and short the same instrument at the same time. Not that that's a big deal, but it can take getting used to.
My preferred alternative when a V reversal is unlikely is to trade both ctx the same direction, exit one at the target and be happy, tighten the second, and take whatever the market is willing to give me as a bonus, usually exiting at the close.
OTOH, if a reversal setup presents itself, I'll exit whatever I've got and take the reversal.
I should point out, tho, that my minimum goal is the average daily range. If I want twice that, I'll do it by managing more than one contract rather than jump in and out.
Which reminds me of that link Ditch gave you to something of "Jimmer's" regarding confirmation. That was actually a post he made to a Yahoo group I set up to discuss a strategy of his, and we had gotten into a debate about whether one ought to wait for confirmation or not. I don't know how it wound up as a web page, but it's weird how this stuff surfaces years later in the most unexpected places.
We never did resolve it because we were trading different strategies. But, in the context of what he was trading, he was correct. There is, however, no "one answer fits all".