It wouldn't be as nice a chart or strategy in that case. Bitcoin and Ethereum both looked like that for a while tonight.

I think the answer is you simply would have to find something else to trade. It's not worth the risk of buying at a base and hoping it keeps going up. You may kick yourself when it goes up 10% without a crack, but you WILL kick yourself when you lose 10 or more % and have to hope it goes back up.