You will not be interested to that in the first place if you see read mostly that altcoin trading can't make money on a long run. And there will be no ICO's now if altcoin trading are not worth it since devs will see it as not worth their effor to developed or to scammed lol.


For profit duration, it's not fixed since we have thing called "price volatility". The outcome of the strategy will depend on price behaviour of a certain coin. The behaviour might be roller coaster or idle for even months.



Strategies vary per trader. Actually no need to copy other's strategy as while you are doing this kind of activity regularly, you can make your own strategy on how to deal with the price fluctuations of a certain alts. How they know if an altcoin is worth investing? Taking the risk if they feel it's worth to try.