Here's the thing...it's so freakin' difficult to time this market because there's so much volatility.
Since the crypto sphere is still relatively new and unregulated, the market behaves very irrationally at the slightest sound of news, good or bad, whether we're talking about fundamentals or from a macro standpoint.
Even if you're a TA guru, there are so many outside factors that can easily influence and manipulate this unstable yet maturing market, which in turn can render this practice ineffective, especially in a bear market.
You kind of just have to roll the dice and understand that all of this is still in it's infancy but if you're in it for the long term (i.e. 1+ years in crypto terms) you're bound to see some sizable gains (again, a relative term), in my opinion.