He makes some good points. But you still have to figure out how much time you have to devote to mining singles. If it's better to mine singles, because you have knowledge of that coin, you have to have the time to devote to acquiring that knowledge and continuously keeping up with it.
You know how far you can push a card as far as overclocking on specific gpu's mining a specific algo, which is also another valid point.
Some of my rigs are auto switching algo's and some are mining singles.
Yes, Sir. The first time I mine I used Nichash to change the automatic algo, then I read and practiced what I read manually.
it takes a long time to know between manual and auto switch (coin). as well as sacrificing a lot of profit because RIG is supposed to be in use mining, this is done to practice what I read.
but all wasted profit is not a problem for a knowledge. (for me)