I would prefer to take profit out of my investment when the price of my principal amount were double already or depend on my desired amount.
How often you are able to book profits after getting doubled? I am just curious to know on what coins that you are investing. Because, if I diversify my portfolio up to 10 different coins, only 1 or 2 coins are doubling in one year of time and all other coins fetching me only negative returns. So, are you investing only with bitcoins or top coins from coinmarketcap along with good technical analysis? Please let us know if your time permits.