I think we need exchange like bleutrade.
grf was both on bleu and yobit,but on yobit there was always low volume,while on bleutrade it was pumped till 500 satoshi if i'm not wrong.
But yobit is good to buy at lowest price.
GRF was added to bleu first, and bleu has a less volume than yobit, so on bleu GRF pumped very nice for many weeks it was first in volume, it happened because it was the only one coin that was pumped there, here in yobit it's full of coin so make one pump is harder. This is why ronin is not pumping nicely here, but I'm not in hurry people need to be patient in trading.
Depends on your trading strategy. I usually don't hold coins for more then 1 month,since i'm a short term trader.
I don't like to have in next 4-5 months 30-50 altcoins wallets in my pc. I prefer to be all in in 2-3 coins and then sell and move next.
Everyone choose his better strategy depending on his time/effort to trading.
Every coin got a life time that is about 1-2 months. Then 99% will die,cause there are always new coins out and community moves on.
Like music. Amy winehouse wins a grammy,but after 1 year her music was already old and grammy goes to someone's different. Here is the same,few altcoins apart.
My principle is only 1
if the coin that I hold it off, the better it becomes garbage in my PC rather than having to sell just to get a little bitcoin (this is true RONIN free distribution but I think it could be an advantage)