" Buy the coins/tokens you see at recently added on coinmarketcap in the first day. Sell after 4 days. "
What mean " recently " , that's the really question. Because one hour, one day or one week late are able to totally change the result. But if you can be at the beginning, it's probably ok.
About the " four days" , not sure is the best way to go out. Better to think with an objective (pourcentage winnings)