Most of this sites that claim to allow you mine online and get some certain percentage of profit will only end up getting you frustrated. There are some that are legit though, so far, like genesis mining, but I don’t see them as a way for you to invest your funds as they aren't worth it.

Just keep your funds in your wallet if you haven't been able to find a good investment yet or just learn how to trade effectively and multiply your cash that way instead.