Good luck dude! This kind of move can pay off big or not, clearly. I’ve personally talked to fable about this a lot, suggest everyone does.

There are a lot of failure modes. The dot-com bubble looked obvious in 1997; it popped in 2000. Anyone shorting in '97-'98 was carried out on a stretcher before being vindicated. In fact 2000-2002 fell in three brutal legs over two years, and anyone who leveraged up after the first 25% leg was destroyed by the next two.