I think it's ok to follow an up trend and advise from someone else, just be smart and don't be greedy.
He said to sell at 20%, 30%. I sold at 10% profit which absolutely saved my ass. Successfully dodged the XEL dump.
I will not regret even if the coin go to the moon later. I had a profit anyway.
This is not an advise of any sort, just what I did as an absolutely noob.