Just saw an interesting video about old trendlines. Playing around with them, I'm curious to find out if this works out. No need to follow, I will be though....
Note
Just updating this, as it looks like this trendline held ETH in it's place. 
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Disclaimer
The information and publications are not meant to be, and do not constitute, financial, investment, trading, or other types of advice or recommendations supplied or endorsed by TradingView. Read more in the Terms of Use.