Well, what else can we do? If we saw our coin plunge we should take the opportunity to accumulate and then just HODL it, if it surges then sell. No one will set at a low price though so what's our choice?
The coins I think better on these buy and HODL strategies are the less volatile one like Bitcoin and Ethereum but if it is an altcoin mostly, you won't be needing to HODL I guess, the fact that most of the altcoins are highly volatile.
It's all about buying low and selling high, that is what investing in Crypto market is, you must follow the market prepare funds when there is a dip and set up a plan on what price you are going to sell it, sometimes it takes a lot of time or a long wait before you can sell, but it's worth it as long as the coin you are holding is good you just have to be patient and wait for the right time to sell.
I doubt that this thread is very focused on the selling aspect in regards to your bitcoin strategy...
Look at the title of the thread.
The focus here remains about accumulating bitcoin and how to do it, so sure if you have reached your BTC accumulation goals, then you can start to consider the extent to which selling might fit into your BTC maintenance plans... but seems to me that the focus of this thread remains accumulation rather than maintenance or even taking profits in dollars.
There are a lot of examples in BTC history of folks who either failed to accumulate enough BTC or sold too much too soon.