When do you decide to sell?
Is it a sat, a % of profit, or even a randomly thought up number in your head?
I am new to trading Crypto, but when I traded other stocks, I would aim for a certain percentage.
This seems much easier to hit that percentage, but much more risky.
How do you determine when to let it go?
All this depends you that how much you want set your target , because with aim and without target you can't achieve anything with any ways.
When when you bought any altcoin then first of all you need to see the market whether is stable or active and whether is at low price and high price according to the price was in the last month .
So according to that you should make thinking and skill that how much %age you can make with the investment .
Now here a second thing will came , that how much money you want invest , if you will invest 0.1btc in any altcoin but the average trade of that coin is 0.01btc per day then ofcourse you are making mistakes .
In this case you should buy that altcoin at the rate 0.005btc at order only because if you will buy at direct rate then the chance of making income will get down . And if you will buy at low and instant sell at small high then ofcourse you can make a decent amount of the profit .
Usually I made 10% profit ( my aim remain atleast 5%) and making bulk investment in the big coins like ETH , dash , ripple , etc coins .