tough question. for a quick trade, down here btwn $1.95-$2.10 with risk of 200-500 shares might work because WTI does not seem to want to go below $50, let alone $51 for very long so a move back to $53-55 could work out well.
with that said, I still think the dollar can move up $.03-$.05 against the Euro which will weigh heavily on WTI which is broken when looking at chart, it is trading below all three major simple moving averages, 200, 100, and 50.
also, since these reset everyday, it will be interesting to see how Sept and Oct crude contracts trade if rates are to rise in (lets face it, December at the earliest)
so a good trick might to take $2000 and buy 500 UWTI at sub $2.10 and buy 10 DWTI at $94.00
it has worked for me about 80% of the time. what we don't want is a tight trading range with 2-3 week duration. for these to pay off, we need lots of volatility.