Nobody can tell when will be dump. I think there is no strategy to protect about crypto market dump and you know that cryptocurrency is very volatile.
I think it is depend on the demand and buyers buy and hold then crypto market will be good.
Yes there is no expert in crypto market that can predict the true behavior of it. Volatility behavior is hard to determined when will be going to dump and pump as well. So keep monitor the marketplace which coins are going to buy and keep for long term investment plans that gives more profit in the long run.