I just stack in rows of 12' x 4' with t posts on each end to hold it. then tarp it. Its on gravel and pallets. Im gonna build a wood shed but haven't got around to it. Then I have a small covered structure that holds a little over 1/3rd cord next to the house. I use the tractor and a pallet to move from the main stack to the house stack to keep it stocked.
Ive never tried the Holz Hausen stack yet but might in the future....We'll see.