Today I removed all the old carpet, pad, staples, etc and have the "wood" all cleaned up and ready for new carpet.
What I've decided to install is 18" square Commercial Grade carpet squares. Just lay down some double sided carpet tape and place tiles. The seam is not visable (some patterns the seam is visable - depends on what style you may want). To remove a tile (to clean, or replace) just grab it with pliers and pull.
Cost is about $1.00 per ft.
Just another idea for the group.