When I used to use the kitchen table for pinning, I set a tv tray off one end and opened up a cardboard cutting mat across the table and over to the tray. This end wasn't very stable for pinning but allowed me to lay the whole quilt out flat. Then I would pin on the table side and either turn it around or just shift it a bit. During an exceptionally busy quilt year, I partially filled 4 coffee cans with cement and put them under my table legs (with a bit on flannel to line them) and this securely raised my table almost 6 inches. This really helped.