Bullish:
Long SPY, Put protection for a fixed loss. This market is subject to a blindsided, -300 DOW point day, and everyone crying on CNBC. So, if you want to go long, grab the put protection in case of a real bad selloff and you're fine. Trend is your friend until it isn't, right?
Bearish:
I wouldn't put on a short until you see a break in trend, don't call a top, wait for it to turnover for consecutive days and some bad economic news that no one was expecting (worse than expected unemployment # is probably the econ. release that can do it),when's the last time we've seen two consecutive down weeks, February?!?!!??? Resiliency.