I would suggest that you continue on trading. For me it is the most safe way to grow bitcoin rather than investing it at HYIP's because most of them are scam but not all, others will last for month but will be eventually become a scam. Or gambling it because we all know that no one gets rich from gambling.
i agree trading could be a good idea to stick with and it will be safe from other people but it appears that you are saying it can be safe from risk well that is not true because trading also has its own risk it is just like gambling in some concept . trading has many things to consider aside from that you should have a good knowledge regarding with trading but it doesn't mean you are already safe from risk you need to remember that every investments is accompanied with risk .