In your opinion when do you predict alt coins will be stable again?
Well, I believe that market as a whole will be stable in a month and start rising up after that. As for altcoins, there are always two sides, bitcoin - altcoins.
But I believe that this is changing, and other altcoins are joining Btc, Etherium for example. So, I believe that we are going to see the value of several top crypto c. rising in next 1-2 months, and after that, slight switch to altcoins. I also believe that we are going to see another "blow" to the crypto market, such as news about ban etc... So we'll see a slight fall. The second part of 2018. is the moon for everything, fomo, another set of normies flooding in, even bigger market coverage of crypto world... All in all, if people think that 2017 was a year of crypto, they are going to be really surprised in 18/19.
Short answer, there is no such thing as stable in crypto as a whole, even less in alt coins.