For your question, please buy huge amount of bitcoin when any dump happens in the chart.
Thank you, but for me this is not an option. I believe it will go down to zero. So I don't want to buy down hill and end up with nothing.
If you believe that bitcoin price will go down to zero,just try to get a bitcoin loan before the crash.
If you get a 1 btc loan and the btc price is 7000 USD,you just sell the btc for fiat,the big crash happens so
the btc price is close to zero.You return the 1 btc loan with all the interest rate(just pay a few dollars to buy a cheap bitcoin) and keep the profits.
This is just my theory.I don`t believe it will work.You will need a big collateral for such loan.