I'm always glad to see other folks that appreciate dock! I really like dock. I know it more as Curly dock rather than Yellow dock, but they are the same species, Rumex crispus. I like dock mixed with other greens when I want cooked greens. They have a smoothness and lemony flavor that really adds to other wild greens, and they don't have to be blanched like dandelion greens. So I add them after I've blanched any of the other greens.
They are a perennial, so once you see those brown seedheads this tmie of year, you know right where to go in the springtime, or even in the fall they can put on a flush of new growth as the weather cools down.
We shared one of our favorite recipes for dock: https://steemit.com/food/@gardenofeden/dock-and-corn-cake-towers-healthy-sustainable-delicious-and-beautiful-food-love-formulas