Are people really willing to buy from you when the price of the altcoin plumbs so rapidly that people may see the risk of crash and that you fail to sell off your coins and finally have a large amount of stagnant coins in your acc?
when trading we are all at risk of being trapped at high prices because maybe the price collapses and we as traders should have overcome that, if we use a lot of money, it is very difficult to sell it in the right position because alternative coin price movements are difficult to predict, therefore you have to make your own calculations to take profit by making a sell order from a distance of 30% to 100% or more, so if the price goes up you are not too late to sell it.
You need that setup in order not to missed the party, most of the time those who failed to generate profits while the pumped happened are those who got greedy instead of closing their position they'll think that something big will come to happen, the sad thing instead of pump correction happened and create a big doomed to the entire investment.
Be well aware and learn how to manage your emotion and your set up plans.