Honestly, I just buy up every shitcoin after it dumps. Don't have a clue what 90% of them even do. They almost always get pumped at some point. Once that happens, sell for a modest profit. Rinse and repeat.
An interesting strategy, but do you ready the worst situation those coins never pumped to old price again? On the market, we have many altcoins like that and you can not recover your money easily after take loss.