Bev, that's so true! Being able to take it down would make it possible to repot at some future point, if necessary/desired, or for it to easily change owners, should one feel like gift-giving or selling.
This method could be used to hang a variety of heavy things, and gave me ideas for hanging things in a more mobile/versatile way in our shed. The hooks could be installed on pieces of wood, then hang the 'hooked pieces' with the cleats. Then as one's assortment of crud evolves, the hooks could much more easily be re-arranaged.