No secret to this. Unless the coin is unlisted and then nobody mines it, but that's a gamble.
There is some truth to that, but a lot of the small market cap coins DO fly enough under the radar to have periods of time they make a lot more (or a lot LESS) than the "basket of profitable coins".
DGB spent a couple of weeks outperforming everything else before folks started talking widely about "mining skein", as one example but even then it took a good week to drop back into the range of the basket coins.
Quite a few coins that bounce around a lot on price too, like lbry and at least one lyra2rev2 based coin, where if you wait for the price peaks you can make quite a bit more semi-consistantly than otherwise.
There is always a coin that makes 30%-XXX% more than the default coin (eth/zcash). Or at least has been for the last 8 months. A LOT of small coins fly under a radar because people dont know how to find profitable coins to mine and rather use excuses like this. At this moment there are still coins to mine that make about 2 as much as zcash does. And there is couple of them.
And no Lyra or Lbry are not the ones that are profitable, non that are shown on what to mine are.
The downside to this is that you need a lot of knowhow and it takes a fucking lot of time
You're right, but all those noobish retards, wants it on the plate right in front of their nose.
User friendly Coin which could be mined on all devices with one click will be the one which takes the market like a storm.