If you need a quick buck, dump them. You can always buy more when you recover financially.
But i always kept my shitcoins in the past. 9 out of 10 would plummet to death, but that 1 that made it, made it big
that is a good suggestion because bad coins will be very risky for a long time it is feared the price will go down again, for now, it is better to buy and save the top coins on the CMC site.