About double and triple bottoms, and generally any patterns and signals in technical analysis:

It makes no sense to anticipate patterns and signals before they actually form. The only point of that is for letting your Hopium (don't smoke that shit, it really is bad for you) run wild and your fantasies roam free. For a double bottom, that would be rising above the highest point in between the two double bottoms. At that point, it'd be confirmed.

Triple bottoms especially are such a rare pattern that you should always bet that the second bottom will be pierced if the price gets near it again.

I cannot believe you do not understand this: It is stupid to increase your slippage cost, reduce your execution chances and increase your counter-party exposure by selling only on one single exchange. It does not matter what followed after. And in his case, the price actually rose for months afterwards, and he sold at the bottom in both the short and medium time frames. Had he had a modicum of sense execution wise and technicals wise, he'd have done much better.

Also, I don't believe he has another 30k because the way he sold showed that he was in a rush, for whatever reason. I'm sure you agree.