Search the site (
https://coinmarketcap.com) for the market size of the Cryptocurrency that are listed on Bittrex and make a list of the Cryptos micro caps. If the market size is less than 5m, this Crypto has a huge chance to double has value in a few hours.
When the crypto has high Total supply, like more than 250m (
https://coinmarketcap.com), the price increase very slow.
Look for Cryptos that your price is below a one dollar. They are potential Cryptos to double their value. But, escape cryptos like Ripple that your total supply is of billions of units and it will take long time to grow.
Study the historical 24-hour volume of the Cryptos that you have found with potential, if have a volume above 100,000, you should keep an eye out.
On the Cryptos charts that you can see on the same site as the first step, see how often it doubles its value and if this has happened for a long time.
Search the Bitcoin Talk of the Cryoto you are studying, how many pages they have, when it was the last time someone commented on this Crypto and if they have any announcement ad for the next few days. If have something new in the road map for the next few days, make a note to buy before the announcement day.
Enter the website of the Crypto to know if the site has more information, if they have the photo of the team that is developing the currency. I always believe in the ones that have the team. If I do not see photo or information about the project team I do not invest, it can be fraud.
Join Cryptomedia Twitter, see how many followers it has, if they have more than 5 thousand is a project that has a large community. See when they had last tweeted. If it is more than months, this may be an indication that the Crypto is dead.
Make an Google spreadsheet and put all the information above for each Crypto and enter daily into Bittrex, see which Crypto has growed value more than 50% on that day and write down in the spreadsheet the name and date that had that change value, after a time you will have a list of information on the Cryptos that most has the potential to double your capital.
Most trades lose money because they invest in the Cryptocoins because someone has said it will rise. This is wrong, if you invest and fall, maybe never go up again at that price you bought. So do your research.