I suggest investing on some legit and trusted bitcoin doubler websites. You can find some in this forum which you can trust because many of the users are being paid by them here.
Aren't all of these Bitcoin doubling websites scam? I mean people should have known by now unless there is any form of return for these websites they just can't double your Bitcoins for you out of thin air.
try to join doubler bitcoin site as early as they launch , if you get lucky try hit and run strategy ,after deposit and get profit don't deposit again because thats too risky.
It's the same with normal ponzis. You maybe will be lucky doing that for one month or two but then you will lose pretty much everything. It's inevitable. I have seen this happening to people too often to believe someting good can come out of it.