Dumping will be only good if the value is really low and when it will be useless but around this time you also can see now that the value of the Bitcoin is rising slowly.
Dumping is good if you considered the price is quite "high".
While on the other hand, if there's a massive dump, it's now your chance and opportunity to make another rounds of buying and now wait for your profits.
If the prices are "high" then the logical thing to do is hold to see even a further price.
But that all depends on your financial situations obviously. I wouldnt waste time on dumping unless its a huge sell off though when you see like $1k being reached and then you plan on buying back in when it falls a bit back.