Is only an immature trader that sees bull times as the only or appropriate time to make profit in trade. A good trader makes profit even in bear market. He/she milks the market at anytime he is convinced for a trade.
Profiting probabilities do really exist either on what kind of trend they are facing. (Bull or Bear) A good trader can really milk out profits no matter which situation they are on.
There are short/active traders and there are long/swing traders.They do really differ on such position that's why skills and capability would really vary on each of them.