Trading is so interesting and exiting, as for holding - it is fully automated process, if can say that, so choose your, maybe trade some, hold others.
Me, I prefer to trade. Because in trading, I can gain a profit in a short period of time. I need to sell my coins for very important reason(financial problem). But I need to make sure that it is in a good price before selling it.
They say HODLing is more profitable than trading because there is a possibility that the coin they are holding were increase its value in the future. But cryptocurrencies are very volatile and unpredictable. The value will rise or fall. And that is the risk of HODLing.