What methods do you use to fees nutrients and why? .
I feed every watering. The only reason I've heard for alternating feed/water is to let the soil microbes recover from the nutrients (assuming you're using synthetic nutes). But, to me it seems like it comes out the same way either way. If you feed every watering you'll feed less than if you feed every other watering. So, less nutrients all the time seems like it would have the same effect on the soil biology than alot followed by none.
I think it has to do with what you feed. If you feed things like humic acids, mycos, etc., it might be good to separate that from synthetic nutrients. Feed them with the water-only feeding. But, if you feed something simple (a scoop of Jack's Classic, for example), I don't see any reason to overfeed followed by "starvation."
(I get better results with 20% or more runoff, especially later in the grow. At least every 2-3 feedings. I think it's like, instead of adding new food to the existing plate which has been partially eaten and not the same ratio of nutrients as when it was first given, by pushing out what's there it's like giving a fresh plate.).