You can invest in a number of HYIPs and increase them much faster.But there exists a very big risk and you can lose everything.
HYIP is bad idea if you don't know how to do..,
as I and others said above, buy btc or trading is best choice now...
That's right, invest in hyip is like a gambling I think, you don't know when the site run out your money, sooner or later.
I ever invest in hyip, that fresh hyip(usually you can get roi easily in fresh hyip LOL), but 2 weeks later the hyip is ponzi and runs out my money.