Edit: If you want to make money in Bitcoin or even in the stock market. Wait for a trend to develop and trade off of it in the same direction. Don't try and time the end of bear trends or bull trends.
If you bet the same amount of money each time and take your emotions out of the picture you should be able to win more than you lose and make money overall.
It's a solid strategy, but makes more sense trading the common stuff like EUR/USD. With Bitcoin there's just too many variables that can change the direction fast.