@Cwmoore577
What you might be able to do is build a little frame and then throw some plastic sheeting up over it, add a door and shelves or hooks inside to hang the buds on/from, then just add a vent hole and filter to the bottom, same on the top so that air flows through, then just find something like a heat mat or a ceramic reptile bulb to release some gentle heat into the drying chamber/area, might even get by with an 25-60 watt incandescent for some gentle heat IR, if you've got a small fan could be ran on low speed, that's all that really matters, you don't really need whooshing air swirling around your buds, just decent air exchange is all thats necessary.
I'm not one to believe that buds should be dried in an open air environment, why would anyone keep their plants in a safe and sterile environment the whole time while growing, and then at harvest time just allow the plants to be placed in an open environment exposed to the elements, dust, pests, debris, fibers, spores etc..... I don't see any real thought out logic in doing that, not really how I advise anyone to treat their hard earned medicine that they grew for themselves.
But yeah if it was me, I'd build a temporary drying tent, and design it in a way that it could folded and be able to put the tent up after a week or 2 when most of the drying is complete, then when each harvest comes around just setup the tent in an area with free space and then you wouldn't have to sacrifice as much space or necessitate too much allocation to a simple drying process which would allow you to continue using that space that is being taken up when the drying process is over.
Hope this helps, cheers.