This is becoming the norm for the newly launched projects, you become late to sell it then you'll miss the higher price that you should about to sell it. Also, check how much is the percentage of tokens from the total supply of the project is allocated to that bounty to think that the dump is caused by bounty hunters.
Just like he said, the dump doesn't entirely come from the hunters. It also comes as a result of the trading frequency on the exchange sites. And this tokens may later turn out be successful or lost as a whole.