There are many schools of thought... pick one and experiment, then pick another and experiment. Eventually, you will have a sound strategy.
To be clear here, I am not asking advice on 'the best strategy'. I am asking for what everyones own approach is to mining, if people care to share.
I have a 1070 rig, that does zcash and a rx580 rig doing ether, however I hold my coins. So my strategy is different from yours.