@roger,
Roger, You said something about the rug going between the legs of the table? In any instance that I've ever seen, a table and chairs would sit on top of a rug/carpet. If the rug is thin and without much weight (like a floor cloth, for example), it will roll up whenever you roll your chair over it in your way or mine. If the rug is heavier, it won't---unless you just keep hitting it with the chair, because the rug is too small. Often, you can get a 9' x 12', 8' x 10' or 5' x 7' rug for $20-$30 at a Goodwill, Salvation Army, AmVets, etc. and they will be sanitized. Craigslist is a good source; I've seen rolls of the under-carpet, rubber matting/padding for softness and sound control there, too, and FREE. I guess, the bigger your city, the greater your choice, though. Check it out and Good Luck!