Do not stick to a coin, mine what is profitable.If you do not have time dual mining and intelligent mining can be alternatives.If you do not have time do not waste your money.
That is many small miners do. They usually switch to the most profitable coins to mine. They just mine.
If many farmers switch all the time, then the profitability for the mining will be simlar, there is no need to switch.
That is right. I stick with the Etheruem mining at the moment. It is almost one of the most profitable to mine.