Just a thought here - how far down (below the soil and mulch level) are the crowns (where the leaves and the roots come together)?
If the crowns are too deep (more than about an inch or so) then that could be the reason you have no blooms, despite the abundant water and faithful fertilizing. Daylilies are touchy in that respect; they will sulk if they are planted (or pull themselves down) too deep.
That happened to me once with a seedling, which had somehow dug itself down so the crown was about 3" below the soil grade. Once I excavated and replanted it, it bloomed the next season.
So go scratch around the fans and see how deep the crowns are.
