The safest method IMO is poloniex btc loans, you can easily grow your btc by around 30-50% with little to no risk. Investing in all other things comes at a great risk and you have to make sure you know what you are doing first.
Have you tried that sir, I always wanted to know how it will be done,..
What are the risk and rewards in lending money in poloniex, as a lender we need to know all aspects so we can analyze well
whether we go with our decision or stay away.