obviously not all altcoins will double or triple, some can even drop in value immediately that's why we have to use the right strategy to be able to earn always and in any case, set a limit value beyond which if it(altcoin) go down, sell immediately, i.e. stop loss on exchanges or exit in stable coin quickly to keep the profit made
If you know how to find it then you will be a successful investor and can even make that x10-100 profit but the thing is can you really take it and have a chance?
there can be someone who knows but many are not it means we will be a loser mostly and only few will win.
unfortunately the right time in my opinion is when you have profited more than 100% of the altcoins you bought, but if you exit completely then when the price goes back up more than 500% like what happened to dogecoin then it will only make you regret because it was too soon to sell all the doge you have.
lol how this will come if you will just come to start?
there is no chance that you can find it when you are not in the situation yet.