Yeah your right its unpredictable but its depends of your strategy and what altcoin you choose..
In my opinion or tips i think better to always use coinmarketcap and choose top 20 altcoin or top 10 altcoin and choose them because those are legit altcoin that you can hold for a long time.
agreed, nobody knows what will happen when will it drops the price or increase the value. But like what you've said it depends on us how are we gonna do it, that's why some traders they used their premonition in trading. But updating the coinmarketcap I think it will help anyhow.
it's all according to what we do. if we do it with focus, we will get the best results. trading as well as other work in the real world. we spent some time in order to get some money to live in the world.