conumdrum...because you want it slick when machine quilting.
My main machine is sunk in a huge old computer table with extra coats of clearcoat so sort of the same thing. When I'm doing something big I line up my ironing board on my left to take the weight, do you have something adjustable height that could serve?
Or roll out a strip of rubberized shelf liner and tack the edges underneath so it doesn't move and see if you like the change, easily reversible. Maybe about 2' to the left of where you work so it doesn't impede everyday piecing.
That said, I'm always blown away when I see someones quilt room full of fabric and/or machines but no set in sewing machine. What a wonderful differrence it makes in everything!