My strategy is to use only one site right now where I invest money.There i buy shAres for low an then i will sell in couple of weeks for 20x bigger price one part of bitcoin and other part I will sell for 200 x bigger price.
Not bad. I used to invest into Banxshares once but then I regretted doing so and decided to sell them. Days after, Banxshares lost interest leaving it with very low liquidity at the OpenLedger exchange. Now, there are no markets for it (according to Coinmarketcap) and it has been forgotten. Many people used to called it a scam, but it seemed like a legit business.
Anyways, I have dedicated my self into investing in Bitcoin and good old alts (like Litecoin)
i think better to you for looking new good concept altcoin, like steem, ethereum, it's have more chance to double your money, because altcoin have lower marketcap than bitcoin.