Could you do this lucs method upside down. I mean I just tested it with bitfinex eth/usd chart randomly and when things move up after huge move down it tends to come back to the previous base. Its bit hard to figure first but seems to be accurate in various spots. So you should basicly start selling your ethereum in these spots or use margin trading shorting. What do you think?

All those upper supports, if it had broken them it would have came back. I used the min 10% bounce down in this example

Not sure how this shorting works, does it have leverage or can you short without leverage, at least you have to pay interest.