I have not been getting much stockpiled. I have been growing in numbers and I have too many groups to tend and rotate-cows, bulls, weaned calves, yearling hfrs, high maintenance issues (lameness issues, calf problems, etc). If/when I can get down to a few groups then I will just rotate through all of it. I would then hold them on part of it, stockpiling the remainder. With my cow numbers I have too much grass in a short amount of time. Backgrounding my own fall calves helps with that, when I do it. I don't know that a guy can be very efficient with it when buying hay, and keeping a relatively steady head count.
I had ideas of rotating through as long as they could keep it ate, then skipping a patch and baling it, then grazing on the next go round. I don't have a baler yet, but I think that would be the way to do it. Or adjust your head count accordingly throughout the year.
I limed over half this year, and spread 30lbs N on about 10ac to try it on a patch I will put spring calvers on to calve. It will be ungrazed until then, first week of March or so